81381850

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{1873}}^1$

素因数の和:1975

約数の個数: 48

約数和(自身を含む): 167310720

約数和(自身を除く): 85928870

約数列:

[1, 2, 5, 10, 11, 22, 25, 50, 55, 79, 110, 158, 275, 395, 550, 790, 869, 1738, 1873, 1975, 3746, 3950, 4345, 8690, 9365, 18730, 20603, 21725, 41206, 43450, 46825, 93650, 103015, 147967, 206030, 295934, 515075, 739835, 1030150, 1479670, 1627637, 3255274, 3699175, 7398350, 8138185, 16276370, 40690925, 81381850]

約数ペア:

[(1, 81381850), (2, 40690925), (5, 16276370), (10, 8138185), (11, 7398350), (22, 3699175), (25, 3255274), (50, 1627637), (55, 1479670), (79, 1030150), (110, 739835), (158, 515075), (275, 295934), (395, 206030), (550, 147967), (790, 103015), (869, 93650), (1738, 46825), (1873, 43450), (1975, 41206), (3746, 21725), (3950, 20603), (4345, 18730), (8690, 9365)]