81357660

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{451987}}^1$

素因数の和:452002

約数の個数: 36

約数和(自身を含む): 246785448

約数和(自身を除く): 165427788

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 451987, 903974, 1355961, 1807948, 2259935, 2711922, 4067883, 4519870, 5423844, 6779805, 8135766, 9039740, 13559610, 16271532, 20339415, 27119220, 40678830, 81357660]

約数ペア:

[(1, 81357660), (2, 40678830), (3, 27119220), (4, 20339415), (5, 16271532), (6, 13559610), (9, 9039740), (10, 8135766), (12, 6779805), (15, 5423844), (18, 4519870), (20, 4067883), (30, 2711922), (36, 2259935), (45, 1807948), (60, 1355961), (90, 903974), (180, 451987)]