21909095

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{83}}^1\times {\mathrm{131}}^1$

素因数の和:263

約数の個数: 32

約数和(自身を含む): 29804544

約数和(自身を除く): 7895449

約数列:

[1, 5, 13, 31, 65, 83, 131, 155, 403, 415, 655, 1079, 1703, 2015, 2573, 4061, 5395, 8515, 10873, 12865, 20305, 33449, 52793, 54365, 141349, 167245, 263965, 337063, 706745, 1685315, 4381819, 21909095]

約数ペア:

[(1, 21909095), (5, 4381819), (13, 1685315), (31, 706745), (65, 337063), (83, 263965), (131, 167245), (155, 141349), (403, 54365), (415, 52793), (655, 33449), (1079, 20305), (1703, 12865), (2015, 10873), (2573, 8515), (4061, 5395)]