256035920

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{239}}^1\times {\mathrm{1913}}^1$

素因数の和:2172

約数の個数: 80

約数和(自身を含む): 683527680

約数和(自身を除く): 427491760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 239, 280, 478, 560, 956, 1195, 1673, 1912, 1913, 2390, 3346, 3824, 3826, 4780, 6692, 7652, 8365, 9560, 9565, 13384, 13391, 15304, 16730, 19120, 19130, 26768, 26782, 30608, 33460, 38260, 53564, 66920, 66955, 76520, 107128, 133840, 133910, 153040, 214256, 267820, 457207, 535640, 914414, 1071280, 1828828, 2286035, 3200449, 3657656, 4572070, 6400898, 7315312, 9144140, 12801796, 16002245, 18288280, 25603592, 32004490, 36576560, 51207184, 64008980, 128017960, 256035920]

約数ペア:

[(1, 256035920), (2, 128017960), (4, 64008980), (5, 51207184), (7, 36576560), (8, 32004490), (10, 25603592), (14, 18288280), (16, 16002245), (20, 12801796), (28, 9144140), (35, 7315312), (40, 6400898), (56, 4572070), (70, 3657656), (80, 3200449), (112, 2286035), (140, 1828828), (239, 1071280), (280, 914414), (478, 535640), (560, 457207), (956, 267820), (1195, 214256), (1673, 153040), (1912, 133910), (1913, 133840), (2390, 107128), (3346, 76520), (3824, 66955), (3826, 66920), (4780, 53564), (6692, 38260), (7652, 33460), (8365, 30608), (9560, 26782), (9565, 26768), (13384, 19130), (13391, 19120), (15304, 16730)]