64502920

素因数分解:

$2^3\times 5^1\times {\mathrm{659}}^1\times {\mathrm{2447}}^1$

素因数の和:3117

約数の個数: 32

約数和(自身を含む): 145411200

約数和(自身を除く): 80908280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 659, 1318, 2447, 2636, 3295, 4894, 5272, 6590, 9788, 12235, 13180, 19576, 24470, 26360, 48940, 97880, 1612573, 3225146, 6450292, 8062865, 12900584, 16125730, 32251460, 64502920]

約数ペア:

[(1, 64502920), (2, 32251460), (4, 16125730), (5, 12900584), (8, 8062865), (10, 6450292), (20, 3225146), (40, 1612573), (659, 97880), (1318, 48940), (2447, 26360), (2636, 24470), (3295, 19576), (4894, 13180), (5272, 12235), (6590, 9788)]