163940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{1171}}^1$

素因数の和:1187

約数の個数: 24

約数和(自身を含む): 393792

約数和(自身を除く): 229852

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 1171, 2342, 4684, 5855, 8197, 11710, 16394, 23420, 32788, 40985, 81970, 163940]

約数ペア:

[(1, 163940), (2, 81970), (4, 40985), (5, 32788), (7, 23420), (10, 16394), (14, 11710), (20, 8197), (28, 5855), (35, 4684), (70, 2342), (140, 1171)]