28918960

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{113}}^1\times {\mathrm{457}}^1$

素因数の和:590

約数の個数: 80

約数和(自身を含む): 77691456

約数和(自身を除く): 48772496

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 113, 140, 226, 280, 452, 457, 560, 565, 791, 904, 914, 1130, 1582, 1808, 1828, 2260, 2285, 3164, 3199, 3656, 3955, 4520, 4570, 6328, 6398, 7312, 7910, 9040, 9140, 12656, 12796, 15820, 15995, 18280, 25592, 31640, 31990, 36560, 51184, 51641, 63280, 63980, 103282, 127960, 206564, 255920, 258205, 361487, 413128, 516410, 722974, 826256, 1032820, 1445948, 1807435, 2065640, 2891896, 3614870, 4131280, 5783792, 7229740, 14459480, 28918960]

約数ペア:

[(1, 28918960), (2, 14459480), (4, 7229740), (5, 5783792), (7, 4131280), (8, 3614870), (10, 2891896), (14, 2065640), (16, 1807435), (20, 1445948), (28, 1032820), (35, 826256), (40, 722974), (56, 516410), (70, 413128), (80, 361487), (112, 258205), (113, 255920), (140, 206564), (226, 127960), (280, 103282), (452, 63980), (457, 63280), (560, 51641), (565, 51184), (791, 36560), (904, 31990), (914, 31640), (1130, 25592), (1582, 18280), (1808, 15995), (1828, 15820), (2260, 12796), (2285, 12656), (3164, 9140), (3199, 9040), (3656, 7910), (3955, 7312), (4520, 6398), (4570, 6328)]