20837040

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{157}}^1$

素因数の和:259

約数の個数: 160

約数和(自身を含む): 75233280

約数和(自身を除く): 54396240

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 56, 60, 70, 79, 80, 84, 105, 112, 120, 140, 157, 158, 168, 210, 237, 240, 280, 314, 316, 336, 395, 420, 471, 474, 553, 560, 628, 632, 785, 790, 840, 942, 948, 1099, 1106, 1185, 1256, 1264, 1570, 1580, 1659, 1680, 1884, 1896, 2198, 2212, 2355, 2370, 2512, 2765, 3140, 3160, 3297, 3318, 3768, 3792, 4396, 4424, 4710, 4740, 5495, 5530, 6280, 6320, 6594, 6636, 7536, 8295, 8792, 8848, 9420, 9480, 10990, 11060, 12403, 12560, 13188, 13272, 16485, 16590, 17584, 18840, 18960, 21980, 22120, 24806, 26376, 26544, 32970, 33180, 37209, 37680, 43960, 44240, 49612, 52752, 62015, 65940, 66360, 74418, 86821, 87920, 99224, 124030, 131880, 132720, 148836, 173642, 186045, 198448, 248060, 260463, 263760, 297672, 347284, 372090, 434105, 496120, 520926, 595344, 694568, 744180, 868210, 992240, 1041852, 1302315, 1389136, 1488360, 1736420, 2083704, 2604630, 2976720, 3472840, 4167408, 5209260, 6945680, 10418520, 20837040]

約数ペア:

[(1, 20837040), (2, 10418520), (3, 6945680), (4, 5209260), (5, 4167408), (6, 3472840), (7, 2976720), (8, 2604630), (10, 2083704), (12, 1736420), (14, 1488360), (15, 1389136), (16, 1302315), (20, 1041852), (21, 992240), (24, 868210), (28, 744180), (30, 694568), (35, 595344), (40, 520926), (42, 496120), (48, 434105), (56, 372090), (60, 347284), (70, 297672), (79, 263760), (80, 260463), (84, 248060), (105, 198448), (112, 186045), (120, 173642), (140, 148836), (157, 132720), (158, 131880), (168, 124030), (210, 99224), (237, 87920), (240, 86821), (280, 74418), (314, 66360), (316, 65940), (336, 62015), (395, 52752), (420, 49612), (471, 44240), (474, 43960), (553, 37680), (560, 37209), (628, 33180), (632, 32970), (785, 26544), (790, 26376), (840, 24806), (942, 22120), (948, 21980), (1099, 18960), (1106, 18840), (1185, 17584), (1256, 16590), (1264, 16485), (1570, 13272), (1580, 13188), (1659, 12560), (1680, 12403), (1884, 11060), (1896, 10990), (2198, 9480), (2212, 9420), (2355, 8848), (2370, 8792), (2512, 8295), (2765, 7536), (3140, 6636), (3160, 6594), (3297, 6320), (3318, 6280), (3768, 5530), (3792, 5495), (4396, 4740), (4424, 4710)]