21494895

素因数分解:

$3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{20183}}^1$

素因数の和:20262

約数の個数: 16

約数和(自身を含む): 34877952

約数和(自身を除く): 13383057

約数列:

[1, 3, 5, 15, 71, 213, 355, 1065, 20183, 60549, 100915, 302745, 1432993, 4298979, 7164965, 21494895]

約数ペア:

[(1, 21494895), (3, 7164965), (5, 4298979), (15, 1432993), (71, 302745), (213, 100915), (355, 60549), (1065, 20183)]