21653540

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{56983}}^1$

素因数の和:57011

約数の個数: 24

約数和(自身を含む): 47866560

約数和(自身を除く): 26213020

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 56983, 113966, 227932, 284915, 569830, 1082677, 1139660, 2165354, 4330708, 5413385, 10826770, 21653540]

約数ペア:

[(1, 21653540), (2, 10826770), (4, 5413385), (5, 4330708), (10, 2165354), (19, 1139660), (20, 1082677), (38, 569830), (76, 284915), (95, 227932), (190, 113966), (380, 56983)]