20407790

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{179}}^1\times {\mathrm{877}}^1$

素因数の和:1076

約数の個数: 32

約数和(自身を含む): 39826080

約数和(自身を除く): 19418290

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 179, 358, 877, 895, 1754, 1790, 2327, 4385, 4654, 8770, 11401, 11635, 22802, 23270, 57005, 114010, 156983, 313966, 784915, 1569830, 2040779, 4081558, 10203895, 20407790]

約数ペア:

[(1, 20407790), (2, 10203895), (5, 4081558), (10, 2040779), (13, 1569830), (26, 784915), (65, 313966), (130, 156983), (179, 114010), (358, 57005), (877, 23270), (895, 22802), (1754, 11635), (1790, 11401), (2327, 8770), (4385, 4654)]