261965810

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{20611}}^1$

素因数の和:20690

約数の個数: 32

約数和(自身を含む): 498645504

約数和(自身を除く): 236679694

約数列:

[1, 2, 5, 10, 31, 41, 62, 82, 155, 205, 310, 410, 1271, 2542, 6355, 12710, 20611, 41222, 103055, 206110, 638941, 845051, 1277882, 1690102, 3194705, 4225255, 6389410, 8450510, 26196581, 52393162, 130982905, 261965810]

約数ペア:

[(1, 261965810), (2, 130982905), (5, 52393162), (10, 26196581), (31, 8450510), (41, 6389410), (62, 4225255), (82, 3194705), (155, 1690102), (205, 1277882), (310, 845051), (410, 638941), (1271, 206110), (2542, 103055), (6355, 41222), (12710, 20611)]