80720816

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{101}}^1\times {\mathrm{239}}^1$

素因数の和:378

約数の個数: 80

約数和(自身を含む): 182131200

約数和(自身を除く): 101410384

約数列:

[1, 2, 4, 8, 11, 16, 19, 22, 38, 44, 76, 88, 101, 152, 176, 202, 209, 239, 304, 404, 418, 478, 808, 836, 956, 1111, 1616, 1672, 1912, 1919, 2222, 2629, 3344, 3824, 3838, 4444, 4541, 5258, 7676, 8888, 9082, 10516, 15352, 17776, 18164, 21032, 21109, 24139, 30704, 36328, 42064, 42218, 48278, 49951, 72656, 84436, 96556, 99902, 168872, 193112, 199804, 265529, 337744, 386224, 399608, 458641, 531058, 799216, 917282, 1062116, 1834564, 2124232, 3669128, 4248464, 5045051, 7338256, 10090102, 20180204, 40360408, 80720816]

約数ペア:

[(1, 80720816), (2, 40360408), (4, 20180204), (8, 10090102), (11, 7338256), (16, 5045051), (19, 4248464), (22, 3669128), (38, 2124232), (44, 1834564), (76, 1062116), (88, 917282), (101, 799216), (152, 531058), (176, 458641), (202, 399608), (209, 386224), (239, 337744), (304, 265529), (404, 199804), (418, 193112), (478, 168872), (808, 99902), (836, 96556), (956, 84436), (1111, 72656), (1616, 49951), (1672, 48278), (1912, 42218), (1919, 42064), (2222, 36328), (2629, 30704), (3344, 24139), (3824, 21109), (3838, 21032), (4444, 18164), (4541, 17776), (5258, 15352), (7676, 10516), (8888, 9082)]