140804920

素因数分解:

$2^3\times 5^1\times {\mathrm{983}}^1\times {\mathrm{3581}}^1$

素因数の和:4575

約数の個数: 32

約数和(自身を含む): 317221920

約数和(自身を除く): 176417000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 983, 1966, 3581, 3932, 4915, 7162, 7864, 9830, 14324, 17905, 19660, 28648, 35810, 39320, 71620, 143240, 3520123, 7040246, 14080492, 17600615, 28160984, 35201230, 70402460, 140804920]

約数ペア:

[(1, 140804920), (2, 70402460), (4, 35201230), (5, 28160984), (8, 17600615), (10, 14080492), (20, 7040246), (40, 3520123), (983, 143240), (1966, 71620), (3581, 39320), (3932, 35810), (4915, 28648), (7162, 19660), (7864, 17905), (9830, 14324)]