21557402

素因数分解:

$2^1\times {\mathrm{89}}^1\times {\mathrm{163}}^1\times {\mathrm{743}}^1$

素因数の和:997

約数の個数: 16

約数和(自身を含む): 32944320

約数和(自身を除く): 11386918

約数列:

[1, 2, 89, 163, 178, 326, 743, 1486, 14507, 29014, 66127, 121109, 132254, 242218, 10778701, 21557402]

約数ペア:

[(1, 21557402), (2, 10778701), (89, 242218), (163, 132254), (178, 121109), (326, 66127), (743, 29014), (1486, 14507)]