19915090

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{307}}^1\times {\mathrm{499}}^1$

素因数の和:826

約数の個数: 32

約数和(自身を含む): 38808000

約数和(自身を除く): 18892910

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 307, 499, 614, 998, 1535, 2495, 3070, 3991, 4990, 6487, 7982, 12974, 19955, 32435, 39910, 64870, 153193, 306386, 765965, 1531930, 1991509, 3983018, 9957545, 19915090]

約数ペア:

[(1, 19915090), (2, 9957545), (5, 3983018), (10, 1991509), (13, 1531930), (26, 765965), (65, 306386), (130, 153193), (307, 64870), (499, 39910), (614, 32435), (998, 19955), (1535, 12974), (2495, 7982), (3070, 6487), (3991, 4990)]