251530209

素因数分解:

$3^2\times 7^1\times {\mathrm{53}}^1\times {\mathrm{71}}^1\times {\mathrm{1061}}^1$

素因数の和:1198

約数の個数: 48

約数和(自身を含む): 429421824

約数和(自身を除く): 177891615

約数列:

[1, 3, 7, 9, 21, 53, 63, 71, 159, 213, 371, 477, 497, 639, 1061, 1113, 1491, 3183, 3339, 3763, 4473, 7427, 9549, 11289, 22281, 26341, 33867, 56233, 66843, 75331, 79023, 168699, 225993, 237069, 393631, 506097, 527317, 677979, 1180893, 1581951, 3542679, 3992543, 4745853, 11977629, 27947801, 35932887, 83843403, 251530209]

約数ペア:

[(1, 251530209), (3, 83843403), (7, 35932887), (9, 27947801), (21, 11977629), (53, 4745853), (63, 3992543), (71, 3542679), (159, 1581951), (213, 1180893), (371, 677979), (477, 527317), (497, 506097), (639, 393631), (1061, 237069), (1113, 225993), (1491, 168699), (3183, 79023), (3339, 75331), (3763, 66843), (4473, 56233), (7427, 33867), (9549, 26341), (11289, 22281)]