40942160

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{113}}^1\times {\mathrm{647}}^1$

素因数の和:780

約数の個数: 80

約数和(自身を含む): 109921536

約数和(自身を除く): 68979376

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, 560, 565, 647, 791, 904, 1130, 1294, 1582, 1808, 2260, 2588, 3164, 3235, 3955, 4520, 4529, 5176, 6328, 6470, 7910, 9040, 9058, 10352, 12656, 12940, 15820, 18116, 22645, 25880, 31640, 36232, 45290, 51760, 63280, 72464, 73111, 90580, 146222, 181160, 292444, 362320, 365555, 511777, 584888, 731110, 1023554, 1169776, 1462220, 2047108, 2558885, 2924440, 4094216, 5117770, 5848880, 8188432, 10235540, 20471080, 40942160]

約数ペア:

[(1, 40942160), (2, 20471080), (4, 10235540), (5, 8188432), (7, 5848880), (8, 5117770), (10, 4094216), (14, 2924440), (16, 2558885), (20, 2047108), (28, 1462220), (35, 1169776), (40, 1023554), (56, 731110), (70, 584888), (80, 511777), (112, 365555), (113, 362320), (140, 292444), (226, 181160), (280, 146222), (452, 90580), (560, 73111), (565, 72464), (647, 63280), (791, 51760), (904, 45290), (1130, 36232), (1294, 31640), (1582, 25880), (1808, 22645), (2260, 18116), (2588, 15820), (3164, 12940), (3235, 12656), (3955, 10352), (4520, 9058), (4529, 9040), (5176, 7910), (6328, 6470)]