80402020

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{277}}^1\times {\mathrm{631}}^1$

素因数の和:940

約数の個数: 48

約数和(自身を含む): 177101568

約数和(自身を除く): 96699548

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 230, 277, 460, 554, 631, 1108, 1262, 1385, 2524, 2770, 3155, 5540, 6310, 6371, 12620, 12742, 14513, 25484, 29026, 31855, 58052, 63710, 72565, 127420, 145130, 174787, 290260, 349574, 699148, 873935, 1747870, 3495740, 4020101, 8040202, 16080404, 20100505, 40201010, 80402020]

約数ペア:

[(1, 80402020), (2, 40201010), (4, 20100505), (5, 16080404), (10, 8040202), (20, 4020101), (23, 3495740), (46, 1747870), (92, 873935), (115, 699148), (230, 349574), (277, 290260), (460, 174787), (554, 145130), (631, 127420), (1108, 72565), (1262, 63710), (1385, 58052), (2524, 31855), (2770, 29026), (3155, 25484), (5540, 14513), (6310, 12742), (6371, 12620)]