155909840

素因数分解:

$2^4\times 5^1\times {\mathrm{397}}^1\times {\mathrm{4909}}^1$

素因数の和:5319

約数の個数: 40

約数和(自身を含む): 363477480

約数和(自身を除く): 207567640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 397, 794, 1588, 1985, 3176, 3970, 4909, 6352, 7940, 9818, 15880, 19636, 24545, 31760, 39272, 49090, 78544, 98180, 196360, 392720, 1948873, 3897746, 7795492, 9744365, 15590984, 19488730, 31181968, 38977460, 77954920, 155909840]

約数ペア:

[(1, 155909840), (2, 77954920), (4, 38977460), (5, 31181968), (8, 19488730), (10, 15590984), (16, 9744365), (20, 7795492), (40, 3897746), (80, 1948873), (397, 392720), (794, 196360), (1588, 98180), (1985, 78544), (3176, 49090), (3970, 39272), (4909, 31760), (6352, 24545), (7940, 19636), (9818, 15880)]