123990760

素因数分解:

$2^3\times 5^1\times {\mathrm{857}}^1\times {\mathrm{3617}}^1$

素因数の和:4485

約数の個数: 32

約数和(自身を含む): 279381960

約数和(自身を除く): 155391200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 857, 1714, 3428, 3617, 4285, 6856, 7234, 8570, 14468, 17140, 18085, 28936, 34280, 36170, 72340, 144680, 3099769, 6199538, 12399076, 15498845, 24798152, 30997690, 61995380, 123990760]

約数ペア:

[(1, 123990760), (2, 61995380), (4, 30997690), (5, 24798152), (8, 15498845), (10, 12399076), (20, 6199538), (40, 3099769), (857, 144680), (1714, 72340), (3428, 36170), (3617, 34280), (4285, 28936), (6856, 18085), (7234, 17140), (8570, 14468)]