21695445

素因数分解:

$3^4\times 5^1\times {\mathrm{53569}}^1$

素因数の和:53586

約数の個数: 20

約数和(自身を含む): 38891820

約数和(自身を除く): 17196375

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 53569, 160707, 267845, 482121, 803535, 1446363, 2410605, 4339089, 7231815, 21695445]

約数ペア:

[(1, 21695445), (3, 7231815), (5, 4339089), (9, 2410605), (15, 1446363), (27, 803535), (45, 482121), (81, 267845), (135, 160707), (405, 53569)]