19808880

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{907}}^1$

素因数の和:943

約数の個数: 160

約数和(自身を含む): 75661824

約数和(自身を除く): 55852944

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 13, 14, 15, 16, 20, 21, 24, 26, 28, 30, 35, 39, 40, 42, 48, 52, 56, 60, 65, 70, 78, 80, 84, 91, 104, 105, 112, 120, 130, 140, 156, 168, 182, 195, 208, 210, 240, 260, 273, 280, 312, 336, 364, 390, 420, 455, 520, 546, 560, 624, 728, 780, 840, 907, 910, 1040, 1092, 1365, 1456, 1560, 1680, 1814, 1820, 2184, 2721, 2730, 3120, 3628, 3640, 4368, 4535, 5442, 5460, 6349, 7256, 7280, 9070, 10884, 10920, 11791, 12698, 13605, 14512, 18140, 19047, 21768, 21840, 23582, 25396, 27210, 31745, 35373, 36280, 38094, 43536, 47164, 50792, 54420, 58955, 63490, 70746, 72560, 76188, 82537, 94328, 95235, 101584, 108840, 117910, 126980, 141492, 152376, 165074, 176865, 188656, 190470, 217680, 235820, 247611, 253960, 282984, 304752, 330148, 353730, 380940, 412685, 471640, 495222, 507920, 565968, 660296, 707460, 761880, 825370, 943280, 990444, 1238055, 1320592, 1414920, 1523760, 1650740, 1980888, 2476110, 2829840, 3301480, 3961776, 4952220, 6602960, 9904440, 19808880]

約数ペア:

[(1, 19808880), (2, 9904440), (3, 6602960), (4, 4952220), (5, 3961776), (6, 3301480), (7, 2829840), (8, 2476110), (10, 1980888), (12, 1650740), (13, 1523760), (14, 1414920), (15, 1320592), (16, 1238055), (20, 990444), (21, 943280), (24, 825370), (26, 761880), (28, 707460), (30, 660296), (35, 565968), (39, 507920), (40, 495222), (42, 471640), (48, 412685), (52, 380940), (56, 353730), (60, 330148), (65, 304752), (70, 282984), (78, 253960), (80, 247611), (84, 235820), (91, 217680), (104, 190470), (105, 188656), (112, 176865), (120, 165074), (130, 152376), (140, 141492), (156, 126980), (168, 117910), (182, 108840), (195, 101584), (208, 95235), (210, 94328), (240, 82537), (260, 76188), (273, 72560), (280, 70746), (312, 63490), (336, 58955), (364, 54420), (390, 50792), (420, 47164), (455, 43536), (520, 38094), (546, 36280), (560, 35373), (624, 31745), (728, 27210), (780, 25396), (840, 23582), (907, 21840), (910, 21768), (1040, 19047), (1092, 18140), (1365, 14512), (1456, 13605), (1560, 12698), (1680, 11791), (1814, 10920), (1820, 10884), (2184, 9070), (2721, 7280), (2730, 7256), (3120, 6349), (3628, 5460), (3640, 5442), (4368, 4535)]