19277740

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{109}}^1\times {\mathrm{239}}^1$

素因数の和:394

約数の個数: 48

約数和(自身を含む): 42134400

約数和(自身を除く): 22856660

約数列:

[1, 2, 4, 5, 10, 20, 37, 74, 109, 148, 185, 218, 239, 370, 436, 478, 545, 740, 956, 1090, 1195, 2180, 2390, 4033, 4780, 8066, 8843, 16132, 17686, 20165, 26051, 35372, 40330, 44215, 52102, 80660, 88430, 104204, 130255, 176860, 260510, 521020, 963887, 1927774, 3855548, 4819435, 9638870, 19277740]

約数ペア:

[(1, 19277740), (2, 9638870), (4, 4819435), (5, 3855548), (10, 1927774), (20, 963887), (37, 521020), (74, 260510), (109, 176860), (148, 130255), (185, 104204), (218, 88430), (239, 80660), (370, 52102), (436, 44215), (478, 40330), (545, 35372), (740, 26051), (956, 20165), (1090, 17686), (1195, 16132), (2180, 8843), (2390, 8066), (4033, 4780)]