12884920

素因数分解:

$2^3\times 5^1\times {\mathrm{83}}^1\times {\mathrm{3881}}^1$

素因数の和:3975

約数の個数: 32

約数和(自身を含む): 29347920

約数和(自身を除く): 16463000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 83, 166, 332, 415, 664, 830, 1660, 3320, 3881, 7762, 15524, 19405, 31048, 38810, 77620, 155240, 322123, 644246, 1288492, 1610615, 2576984, 3221230, 6442460, 12884920]

約数ペア:

[(1, 12884920), (2, 6442460), (4, 3221230), (5, 2576984), (8, 1610615), (10, 1288492), (20, 644246), (40, 322123), (83, 155240), (166, 77620), (332, 38810), (415, 31048), (664, 19405), (830, 15524), (1660, 7762), (3320, 3881)]