18764440

素因数分解:

$2^3\times 5^1\times {\mathrm{131}}^1\times {\mathrm{3581}}^1$

素因数の和:3723

約数の個数: 32

約数和(自身を含む): 42554160

約数和(自身を除く): 23789720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 131, 262, 524, 655, 1048, 1310, 2620, 3581, 5240, 7162, 14324, 17905, 28648, 35810, 71620, 143240, 469111, 938222, 1876444, 2345555, 3752888, 4691110, 9382220, 18764440]

約数ペア:

[(1, 18764440), (2, 9382220), (4, 4691110), (5, 3752888), (8, 2345555), (10, 1876444), (20, 938222), (40, 469111), (131, 143240), (262, 71620), (524, 35810), (655, 28648), (1048, 17905), (1310, 14324), (2620, 7162), (3581, 5240)]