20180810

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{53}}^1\times {\mathrm{101}}^1$

素因数の和:203

約数の個数: 64

約数和(自身を含む): 41640480

約数和(自身を除く): 21459670

約数列:

[1, 2, 5, 10, 13, 26, 29, 53, 58, 65, 101, 106, 130, 145, 202, 265, 290, 377, 505, 530, 689, 754, 1010, 1313, 1378, 1537, 1885, 2626, 2929, 3074, 3445, 3770, 5353, 5858, 6565, 6890, 7685, 10706, 13130, 14645, 15370, 19981, 26765, 29290, 38077, 39962, 53530, 69589, 76154, 99905, 139178, 155237, 190385, 199810, 310474, 347945, 380770, 695890, 776185, 1552370, 2018081, 4036162, 10090405, 20180810]

約数ペア:

[(1, 20180810), (2, 10090405), (5, 4036162), (10, 2018081), (13, 1552370), (26, 776185), (29, 695890), (53, 380770), (58, 347945), (65, 310474), (101, 199810), (106, 190385), (130, 155237), (145, 139178), (202, 99905), (265, 76154), (290, 69589), (377, 53530), (505, 39962), (530, 38077), (689, 29290), (754, 26765), (1010, 19981), (1313, 15370), (1378, 14645), (1537, 13130), (1885, 10706), (2626, 7685), (2929, 6890), (3074, 6565), (3445, 5858), (3770, 5353)]