13321940

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{21487}}^1$

素因数の和:21527

約数の個数: 24

約数和(自身を含む): 28879872

約数和(自身を除く): 15557932

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 21487, 42974, 85948, 107435, 214870, 429740, 666097, 1332194, 2664388, 3330485, 6660970, 13321940]

約数ペア:

[(1, 13321940), (2, 6660970), (4, 3330485), (5, 2664388), (10, 1332194), (20, 666097), (31, 429740), (62, 214870), (124, 107435), (155, 85948), (310, 42974), (620, 21487)]