19943880

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{521}}^1$

素因数の和:575

約数の個数: 128

約数和(自身を含む): 67651200

約数和(自身を除く): 47707320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 20, 22, 24, 29, 30, 33, 40, 44, 55, 58, 60, 66, 87, 88, 110, 116, 120, 132, 145, 165, 174, 220, 232, 264, 290, 319, 330, 348, 435, 440, 521, 580, 638, 660, 696, 870, 957, 1042, 1160, 1276, 1320, 1563, 1595, 1740, 1914, 2084, 2552, 2605, 3126, 3190, 3480, 3828, 4168, 4785, 5210, 5731, 6252, 6380, 7656, 7815, 9570, 10420, 11462, 12504, 12760, 15109, 15630, 17193, 19140, 20840, 22924, 28655, 30218, 31260, 34386, 38280, 45327, 45848, 57310, 60436, 62520, 68772, 75545, 85965, 90654, 114620, 120872, 137544, 151090, 166199, 171930, 181308, 226635, 229240, 302180, 332398, 343860, 362616, 453270, 498597, 604360, 664796, 687720, 830995, 906540, 997194, 1329592, 1661990, 1813080, 1994388, 2492985, 3323980, 3988776, 4985970, 6647960, 9971940, 19943880]

約数ペア:

[(1, 19943880), (2, 9971940), (3, 6647960), (4, 4985970), (5, 3988776), (6, 3323980), (8, 2492985), (10, 1994388), (11, 1813080), (12, 1661990), (15, 1329592), (20, 997194), (22, 906540), (24, 830995), (29, 687720), (30, 664796), (33, 604360), (40, 498597), (44, 453270), (55, 362616), (58, 343860), (60, 332398), (66, 302180), (87, 229240), (88, 226635), (110, 181308), (116, 171930), (120, 166199), (132, 151090), (145, 137544), (165, 120872), (174, 114620), (220, 90654), (232, 85965), (264, 75545), (290, 68772), (319, 62520), (330, 60436), (348, 57310), (435, 45848), (440, 45327), (521, 38280), (580, 34386), (638, 31260), (660, 30218), (696, 28655), (870, 22924), (957, 20840), (1042, 19140), (1160, 17193), (1276, 15630), (1320, 15109), (1563, 12760), (1595, 12504), (1740, 11462), (1914, 10420), (2084, 9570), (2552, 7815), (2605, 7656), (3126, 6380), (3190, 6252), (3480, 5731), (3828, 5210), (4168, 4785)]