8870420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{313}}^1$

素因数の和:444

約数の個数: 48

約数和(自身を含む): 20309520

約数和(自身を除く): 11439100

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 109, 130, 218, 260, 313, 436, 545, 626, 1090, 1252, 1417, 1565, 2180, 2834, 3130, 4069, 5668, 6260, 7085, 8138, 14170, 16276, 20345, 28340, 34117, 40690, 68234, 81380, 136468, 170585, 341170, 443521, 682340, 887042, 1774084, 2217605, 4435210, 8870420]

約数ペア:

[(1, 8870420), (2, 4435210), (4, 2217605), (5, 1774084), (10, 887042), (13, 682340), (20, 443521), (26, 341170), (52, 170585), (65, 136468), (109, 81380), (130, 68234), (218, 40690), (260, 34117), (313, 28340), (436, 20345), (545, 16276), (626, 14170), (1090, 8138), (1252, 7085), (1417, 6260), (1565, 5668), (2180, 4069), (2834, 3130)]