25016140

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{79}}^1\times {\mathrm{223}}^1$

素因数の和:382

約数の個数: 48

約数和(自身を含む): 54190080

約数和(自身を除く): 29173940

約数列:

[1, 2, 4, 5, 10, 20, 71, 79, 142, 158, 223, 284, 316, 355, 395, 446, 710, 790, 892, 1115, 1420, 1580, 2230, 4460, 5609, 11218, 15833, 17617, 22436, 28045, 31666, 35234, 56090, 63332, 70468, 79165, 88085, 112180, 158330, 176170, 316660, 352340, 1250807, 2501614, 5003228, 6254035, 12508070, 25016140]

約数ペア:

[(1, 25016140), (2, 12508070), (4, 6254035), (5, 5003228), (10, 2501614), (20, 1250807), (71, 352340), (79, 316660), (142, 176170), (158, 158330), (223, 112180), (284, 88085), (316, 79165), (355, 70468), (395, 63332), (446, 56090), (710, 35234), (790, 31666), (892, 28045), (1115, 22436), (1420, 17617), (1580, 15833), (2230, 11218), (4460, 5609)]