21507415

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{6449}}^1$

素因数の和:6506

約数の個数: 16

約数和(自身を含む): 27864000

約数和(自身を除く): 6356585

約数列:

[1, 5, 23, 29, 115, 145, 667, 3335, 6449, 32245, 148327, 187021, 741635, 935105, 4301483, 21507415]

約数ペア:

[(1, 21507415), (5, 4301483), (23, 935105), (29, 741635), (115, 187021), (145, 148327), (667, 32245), (3335, 6449)]