72180315

素因数分解:

$3^4\times 5^1\times {\mathrm{178223}}^1$

素因数の和:178240

約数の個数: 20

約数和(自身を含む): 129390624

約数和(自身を除く): 57210309

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 178223, 534669, 891115, 1604007, 2673345, 4812021, 8020035, 14436063, 24060105, 72180315]

約数ペア:

[(1, 72180315), (3, 24060105), (5, 14436063), (9, 8020035), (15, 4812021), (27, 2673345), (45, 1604007), (81, 891115), (135, 534669), (405, 178223)]