20805320

素因数分解:

$2^3\times 5^1\times {\mathrm{163}}^1\times {\mathrm{3191}}^1$

素因数の和:3365

約数の個数: 32

約数和(自身を含む): 47113920

約数和(自身を除く): 26308600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 163, 326, 652, 815, 1304, 1630, 3191, 3260, 6382, 6520, 12764, 15955, 25528, 31910, 63820, 127640, 520133, 1040266, 2080532, 2600665, 4161064, 5201330, 10402660, 20805320]

約数ペア:

[(1, 20805320), (2, 10402660), (4, 5201330), (5, 4161064), (8, 2600665), (10, 2080532), (20, 1040266), (40, 520133), (163, 127640), (326, 63820), (652, 31910), (815, 25528), (1304, 15955), (1630, 12764), (3191, 6520), (3260, 6382)]