20189403640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{401}}^1\times {\mathrm{179813}}^1$

素因数の和:180232

約数の個数: 64

約数和(自身を含む): 52045364160

約数和(自身を除く): 31855960520

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 401, 802, 1604, 2005, 2807, 3208, 4010, 5614, 8020, 11228, 14035, 16040, 22456, 28070, 56140, 112280, 179813, 359626, 719252, 899065, 1258691, 1438504, 1798130, 2517382, 3596260, 5034764, 6293455, 7192520, 10069528, 12586910, 25173820, 50347640, 72105013, 144210026, 288420052, 360525065, 504735091, 576840104, 721050130, 1009470182, 1442100260, 2018940364, 2523675455, 2884200520, 4037880728, 5047350910, 10094701820, 20189403640]

約数ペア:

[(1, 20189403640), (2, 10094701820), (4, 5047350910), (5, 4037880728), (7, 2884200520), (8, 2523675455), (10, 2018940364), (14, 1442100260), (20, 1009470182), (28, 721050130), (35, 576840104), (40, 504735091), (56, 360525065), (70, 288420052), (140, 144210026), (280, 72105013), (401, 50347640), (802, 25173820), (1604, 12586910), (2005, 10069528), (2807, 7192520), (3208, 6293455), (4010, 5034764), (5614, 3596260), (8020, 2517382), (11228, 1798130), (14035, 1438504), (16040, 1258691), (22456, 899065), (28070, 719252), (56140, 359626), (112280, 179813)]