18942040

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{499}}^1$

素因数の和:596

約数の個数: 64

約数和(自身を含む): 46620000

約数和(自身を除く): 27677960

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 73, 104, 130, 146, 260, 292, 365, 499, 520, 584, 730, 949, 998, 1460, 1898, 1996, 2495, 2920, 3796, 3992, 4745, 4990, 6487, 7592, 9490, 9980, 12974, 18980, 19960, 25948, 32435, 36427, 37960, 51896, 64870, 72854, 129740, 145708, 182135, 259480, 291416, 364270, 473551, 728540, 947102, 1457080, 1894204, 2367755, 3788408, 4735510, 9471020, 18942040]

約数ペア:

[(1, 18942040), (2, 9471020), (4, 4735510), (5, 3788408), (8, 2367755), (10, 1894204), (13, 1457080), (20, 947102), (26, 728540), (40, 473551), (52, 364270), (65, 291416), (73, 259480), (104, 182135), (130, 145708), (146, 129740), (260, 72854), (292, 64870), (365, 51896), (499, 37960), (520, 36427), (584, 32435), (730, 25948), (949, 19960), (998, 18980), (1460, 12974), (1898, 9980), (1996, 9490), (2495, 7592), (2920, 6487), (3796, 4990), (3992, 4745)]