8220905

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{131}}^1\times {\mathrm{163}}^1$

素因数の和:317

約数の個数: 32

約数和(自身を含む): 12469248

約数和(自身を除く): 4248343

約数列:

[1, 5, 7, 11, 35, 55, 77, 131, 163, 385, 655, 815, 917, 1141, 1441, 1793, 4585, 5705, 7205, 8965, 10087, 12551, 21353, 50435, 62755, 106765, 149471, 234883, 747355, 1174415, 1644181, 8220905]

約数ペア:

[(1, 8220905), (5, 1644181), (7, 1174415), (11, 747355), (35, 234883), (55, 149471), (77, 106765), (131, 62755), (163, 50435), (385, 21353), (655, 12551), (815, 10087), (917, 8965), (1141, 7205), (1441, 5705), (1793, 4585)]