31880920

素因数分解:

$2^3\times 5^1\times {\mathrm{383}}^1\times {\mathrm{2081}}^1$

素因数の和:2475

約数の個数: 32

約数和(自身を含む): 71953920

約数和(自身を除く): 40073000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 383, 766, 1532, 1915, 2081, 3064, 3830, 4162, 7660, 8324, 10405, 15320, 16648, 20810, 41620, 83240, 797023, 1594046, 3188092, 3985115, 6376184, 7970230, 15940460, 31880920]

約数ペア:

[(1, 31880920), (2, 15940460), (4, 7970230), (5, 6376184), (8, 3985115), (10, 3188092), (20, 1594046), (40, 797023), (383, 83240), (766, 41620), (1532, 20810), (1915, 16648), (2081, 15320), (3064, 10405), (3830, 8324), (4162, 7660)]