21536450

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1949}}^1$

素因数の和:1991

約数の個数: 48

約数和(自身を含む): 45700200

約数和(自身を除く): 24163750

約数列:

[1, 2, 5, 10, 13, 17, 25, 26, 34, 50, 65, 85, 130, 170, 221, 325, 425, 442, 650, 850, 1105, 1949, 2210, 3898, 5525, 9745, 11050, 19490, 25337, 33133, 48725, 50674, 66266, 97450, 126685, 165665, 253370, 331330, 430729, 633425, 828325, 861458, 1266850, 1656650, 2153645, 4307290, 10768225, 21536450]

約数ペア:

[(1, 21536450), (2, 10768225), (5, 4307290), (10, 2153645), (13, 1656650), (17, 1266850), (25, 861458), (26, 828325), (34, 633425), (50, 430729), (65, 331330), (85, 253370), (130, 165665), (170, 126685), (221, 97450), (325, 66266), (425, 50674), (442, 48725), (650, 33133), (850, 25337), (1105, 19490), (1949, 11050), (2210, 9745), (3898, 5525)]