21747980

素因数分解:

$2^2\times 5^1\times {\mathrm{113}}^1\times {\mathrm{9623}}^1$

素因数の和:9745

約数の個数: 24

約数和(自身を含む): 46079712

約数和(自身を除く): 24331732

約数列:

[1, 2, 4, 5, 10, 20, 113, 226, 452, 565, 1130, 2260, 9623, 19246, 38492, 48115, 96230, 192460, 1087399, 2174798, 4349596, 5436995, 10873990, 21747980]

約数ペア:

[(1, 21747980), (2, 10873990), (4, 5436995), (5, 4349596), (10, 2174798), (20, 1087399), (113, 192460), (226, 96230), (452, 48115), (565, 38492), (1130, 19246), (2260, 9623)]