21365775

素因数分解:

$3^5\times 5^2\times {\mathrm{3517}}^1$

素因数の和:3542

約数の個数: 36

約数和(自身を含む): 39697112

約数和(自身を除く): 18331337

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 81, 135, 225, 243, 405, 675, 1215, 2025, 3517, 6075, 10551, 17585, 31653, 52755, 87925, 94959, 158265, 263775, 284877, 474795, 791325, 854631, 1424385, 2373975, 4273155, 7121925, 21365775]

約数ペア:

[(1, 21365775), (3, 7121925), (5, 4273155), (9, 2373975), (15, 1424385), (25, 854631), (27, 791325), (45, 474795), (75, 284877), (81, 263775), (135, 158265), (225, 94959), (243, 87925), (405, 52755), (675, 31653), (1215, 17585), (2025, 10551), (3517, 6075)]