1999731980

素因数分解:

$2^2\times 5^1\times {\mathrm{149}}^1\times {\mathrm{577}}^1\times {\mathrm{1163}}^1$

素因数の和:1898

約数の個数: 48

約数和(自身を含む): 4238589600

約数和(自身を除く): 2238857620

約数列:

[1, 2, 4, 5, 10, 20, 149, 298, 577, 596, 745, 1154, 1163, 1490, 2308, 2326, 2885, 2980, 4652, 5770, 5815, 11540, 11630, 23260, 85973, 171946, 173287, 343892, 346574, 429865, 671051, 693148, 859730, 866435, 1342102, 1719460, 1732870, 2684204, 3355255, 3465740, 6710510, 13421020, 99986599, 199973198, 399946396, 499932995, 999865990, 1999731980]

約数ペア:

[(1, 1999731980), (2, 999865990), (4, 499932995), (5, 399946396), (10, 199973198), (20, 99986599), (149, 13421020), (298, 6710510), (577, 3465740), (596, 3355255), (745, 2684204), (1154, 1732870), (1163, 1719460), (1490, 1342102), (2308, 866435), (2326, 859730), (2885, 693148), (2980, 671051), (4652, 429865), (5770, 346574), (5815, 343892), (11540, 173287), (11630, 171946), (23260, 85973)]