20923360

素因数分解:

$2^5\times 5^1\times {\mathrm{251}}^1\times {\mathrm{521}}^1$

素因数の和:787

約数の個数: 48

約数和(自身を含む): 49723632

約数和(自身を除く): 28800272

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 251, 502, 521, 1004, 1042, 1255, 2008, 2084, 2510, 2605, 4016, 4168, 5020, 5210, 8032, 8336, 10040, 10420, 16672, 20080, 20840, 40160, 41680, 83360, 130771, 261542, 523084, 653855, 1046168, 1307710, 2092336, 2615420, 4184672, 5230840, 10461680, 20923360]

約数ペア:

[(1, 20923360), (2, 10461680), (4, 5230840), (5, 4184672), (8, 2615420), (10, 2092336), (16, 1307710), (20, 1046168), (32, 653855), (40, 523084), (80, 261542), (160, 130771), (251, 83360), (502, 41680), (521, 40160), (1004, 20840), (1042, 20080), (1255, 16672), (2008, 10420), (2084, 10040), (2510, 8336), (2605, 8032), (4016, 5210), (4168, 5020)]