21396902

素因数分解:

$2^1\times {\mathrm{83}}^1\times {\mathrm{157}}^1\times {\mathrm{821}}^1$

素因数の和:1063

約数の個数: 16

約数和(自身を含む): 32728752

約数和(自身を除く): 11331850

約数列:

[1, 2, 83, 157, 166, 314, 821, 1642, 13031, 26062, 68143, 128897, 136286, 257794, 10698451, 21396902]

約数ペア:

[(1, 21396902), (2, 10698451), (83, 257794), (157, 136286), (166, 128897), (314, 68143), (821, 26062), (1642, 13031)]