398013840

素因数分解:

$2^4\times 3^2\times 5^1\times 7^1\times {\mathrm{157}}^1\times {\mathrm{503}}^1$

素因数の和:686

約数の個数: 240

約数和(自身を含む): 1540401408

約数和(自身を除く): 1142387568

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 48, 56, 60, 63, 70, 72, 80, 84, 90, 105, 112, 120, 126, 140, 144, 157, 168, 180, 210, 240, 252, 280, 314, 315, 336, 360, 420, 471, 503, 504, 560, 628, 630, 720, 785, 840, 942, 1006, 1008, 1099, 1256, 1260, 1413, 1509, 1570, 1680, 1884, 2012, 2198, 2355, 2512, 2515, 2520, 2826, 3018, 3140, 3297, 3521, 3768, 4024, 4396, 4527, 4710, 5030, 5040, 5495, 5652, 6036, 6280, 6594, 7042, 7065, 7536, 7545, 8048, 8792, 9054, 9420, 9891, 10060, 10563, 10990, 11304, 12072, 12560, 13188, 14084, 14130, 15090, 16485, 17584, 17605, 18108, 18840, 19782, 20120, 21126, 21980, 22608, 22635, 24144, 26376, 28168, 28260, 30180, 31689, 32970, 35210, 36216, 37680, 39564, 40240, 42252, 43960, 45270, 49455, 52752, 52815, 56336, 56520, 60360, 63378, 65940, 70420, 72432, 78971, 79128, 84504, 87920, 90540, 98910, 105630, 113040, 120720, 126756, 131880, 140840, 157942, 158256, 158445, 169008, 181080, 197820, 211260, 236913, 253512, 263760, 281680, 315884, 316890, 362160, 394855, 395640, 422520, 473826, 507024, 552797, 631768, 633780, 710739, 789710, 791280, 845040, 947652, 1105594, 1184565, 1263536, 1267560, 1421478, 1579420, 1658391, 1895304, 2211188, 2369130, 2535120, 2763985, 2842956, 3158840, 3316782, 3553695, 3790608, 4422376, 4738260, 4975173, 5527970, 5685912, 6317680, 6633564, 7107390, 8291955, 8844752, 9476520, 9950346, 11055940, 11371824, 13267128, 14214780, 16583910, 18953040, 19900692, 22111880, 24875865, 26534256, 28429560, 33167820, 39801384, 44223760, 49751730, 56859120, 66335640, 79602768, 99503460, 132671280, 199006920, 398013840]

約数ペア:

[(1, 398013840), (2, 199006920), (3, 132671280), (4, 99503460), (5, 79602768), (6, 66335640), (7, 56859120), (8, 49751730), (9, 44223760), (10, 39801384), (12, 33167820), (14, 28429560), (15, 26534256), (16, 24875865), (18, 22111880), (20, 19900692), (21, 18953040), (24, 16583910), (28, 14214780), (30, 13267128), (35, 11371824), (36, 11055940), (40, 9950346), (42, 9476520), (45, 8844752), (48, 8291955), (56, 7107390), (60, 6633564), (63, 6317680), (70, 5685912), (72, 5527970), (80, 4975173), (84, 4738260), (90, 4422376), (105, 3790608), (112, 3553695), (120, 3316782), (126, 3158840), (140, 2842956), (144, 2763985), (157, 2535120), (168, 2369130), (180, 2211188), (210, 1895304), (240, 1658391), (252, 1579420), (280, 1421478), (314, 1267560), (315, 1263536), (336, 1184565), (360, 1105594), (420, 947652), (471, 845040), (503, 791280), (504, 789710), (560, 710739), (628, 633780), (630, 631768), (720, 552797), (785, 507024), (840, 473826), (942, 422520), (1006, 395640), (1008, 394855), (1099, 362160), (1256, 316890), (1260, 315884), (1413, 281680), (1509, 263760), (1570, 253512), (1680, 236913), (1884, 211260), (2012, 197820), (2198, 181080), (2355, 169008), (2512, 158445), (2515, 158256), (2520, 157942), (2826, 140840), (3018, 131880), (3140, 126756), (3297, 120720), (3521, 113040), (3768, 105630), (4024, 98910), (4396, 90540), (4527, 87920), (4710, 84504), (5030, 79128), (5040, 78971), (5495, 72432), (5652, 70420), (6036, 65940), (6280, 63378), (6594, 60360), (7042, 56520), (7065, 56336), (7536, 52815), (7545, 52752), (8048, 49455), (8792, 45270), (9054, 43960), (9420, 42252), (9891, 40240), (10060, 39564), (10563, 37680), (10990, 36216), (11304, 35210), (12072, 32970), (12560, 31689), (13188, 30180), (14084, 28260), (14130, 28168), (15090, 26376), (16485, 24144), (17584, 22635), (17605, 22608), (18108, 21980), (18840, 21126), (19782, 20120)]