21292545

素因数分解:

$3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{19993}}^1$

素因数の和:20072

約数の個数: 16

約数和(自身を含む): 34549632

約数和(自身を除く): 13257087

約数列:

[1, 3, 5, 15, 71, 213, 355, 1065, 19993, 59979, 99965, 299895, 1419503, 4258509, 7097515, 21292545]

約数ペア:

[(1, 21292545), (3, 7097515), (5, 4258509), (15, 1419503), (71, 299895), (213, 99965), (355, 59979), (1065, 19993)]