81107960

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{106721}}^1$

素因数の和:106751

約数の個数: 32

約数和(自身を含む): 192099600

約数和(自身を除く): 110991640

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 106721, 213442, 426884, 533605, 853768, 1067210, 2027699, 2134420, 4055398, 4268840, 8110796, 10138495, 16221592, 20276990, 40553980, 81107960]

約数ペア:

[(1, 81107960), (2, 40553980), (4, 20276990), (5, 16221592), (8, 10138495), (10, 8110796), (19, 4268840), (20, 4055398), (38, 2134420), (40, 2027699), (76, 1067210), (95, 853768), (152, 533605), (190, 426884), (380, 213442), (760, 106721)]