215318655

素因数分解:

$3^5\times 5^1\times {\mathrm{177217}}^1$

素因数の和:177237

約数の個数: 24

約数和(自身を含む): 387044112

約数和(自身を除く): 171725457

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 243, 405, 1215, 177217, 531651, 886085, 1594953, 2658255, 4784859, 7974765, 14354577, 23924295, 43063731, 71772885, 215318655]

約数ペア:

[(1, 215318655), (3, 71772885), (5, 43063731), (9, 23924295), (15, 14354577), (27, 7974765), (45, 4784859), (81, 2658255), (135, 1594953), (243, 886085), (405, 531651), (1215, 177217)]