19857990

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{9323}}^1$

素因数の和:9404

約数の個数: 32

約数和(自身を含む): 48335616

約数和(自身を除く): 28477626

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 71, 142, 213, 355, 426, 710, 1065, 2130, 9323, 18646, 27969, 46615, 55938, 93230, 139845, 279690, 661933, 1323866, 1985799, 3309665, 3971598, 6619330, 9928995, 19857990]

約数ペア:

[(1, 19857990), (2, 9928995), (3, 6619330), (5, 3971598), (6, 3309665), (10, 1985799), (15, 1323866), (30, 661933), (71, 279690), (142, 139845), (213, 93230), (355, 55938), (426, 46615), (710, 27969), (1065, 18646), (2130, 9323)]