19495450

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{337}}^1$

素因数の和:451

約数の個数: 48

約数和(自身を含む): 39606840

約数和(自身を除く): 20111390

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 89, 130, 178, 325, 337, 445, 650, 674, 890, 1157, 1685, 2225, 2314, 3370, 4381, 4450, 5785, 8425, 8762, 11570, 16850, 21905, 28925, 29993, 43810, 57850, 59986, 109525, 149965, 219050, 299930, 389909, 749825, 779818, 1499650, 1949545, 3899090, 9747725, 19495450]

約数ペア:

[(1, 19495450), (2, 9747725), (5, 3899090), (10, 1949545), (13, 1499650), (25, 779818), (26, 749825), (50, 389909), (65, 299930), (89, 219050), (130, 149965), (178, 109525), (325, 59986), (337, 57850), (445, 43810), (650, 29993), (674, 28925), (890, 21905), (1157, 16850), (1685, 11570), (2225, 8762), (2314, 8425), (3370, 5785), (4381, 4450)]