21243515

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{239}}^1\times {\mathrm{613}}^1$

素因数の和:886

約数の個数: 16

約数和(自身を含む): 26524800

約数和(自身を除く): 5281285

約数列:

[1, 5, 29, 145, 239, 613, 1195, 3065, 6931, 17777, 34655, 88885, 146507, 732535, 4248703, 21243515]

約数ペア:

[(1, 21243515), (5, 4248703), (29, 732535), (145, 146507), (239, 88885), (613, 34655), (1195, 17777), (3065, 6931)]