259140

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{617}}^1$

素因数の和:636

約数の個数: 48

約数和(自身を含む): 830592

約数和(自身を除く): 571452

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 617, 1234, 1851, 2468, 3085, 3702, 4319, 6170, 7404, 8638, 9255, 12340, 12957, 17276, 18510, 21595, 25914, 37020, 43190, 51828, 64785, 86380, 129570, 259140]

約数ペア:

[(1, 259140), (2, 129570), (3, 86380), (4, 64785), (5, 51828), (6, 43190), (7, 37020), (10, 25914), (12, 21595), (14, 18510), (15, 17276), (20, 12957), (21, 12340), (28, 9255), (30, 8638), (35, 7404), (42, 6170), (60, 4319), (70, 3702), (84, 3085), (105, 2468), (140, 1851), (210, 1234), (420, 617)]