643280

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1$

素因数の和:84

約数の個数: 80

約数和(自身を含む): 1767744

約数和(自身を除く): 1124464

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 17, 20, 22, 34, 40, 43, 44, 55, 68, 80, 85, 86, 88, 110, 136, 170, 172, 176, 187, 215, 220, 272, 340, 344, 374, 430, 440, 473, 680, 688, 731, 748, 860, 880, 935, 946, 1360, 1462, 1496, 1720, 1870, 1892, 2365, 2924, 2992, 3440, 3655, 3740, 3784, 4730, 5848, 7310, 7480, 7568, 8041, 9460, 11696, 14620, 14960, 16082, 18920, 29240, 32164, 37840, 40205, 58480, 64328, 80410, 128656, 160820, 321640, 643280]

約数ペア:

[(1, 643280), (2, 321640), (4, 160820), (5, 128656), (8, 80410), (10, 64328), (11, 58480), (16, 40205), (17, 37840), (20, 32164), (22, 29240), (34, 18920), (40, 16082), (43, 14960), (44, 14620), (55, 11696), (68, 9460), (80, 8041), (85, 7568), (86, 7480), (88, 7310), (110, 5848), (136, 4730), (170, 3784), (172, 3740), (176, 3655), (187, 3440), (215, 2992), (220, 2924), (272, 2365), (340, 1892), (344, 1870), (374, 1720), (430, 1496), (440, 1462), (473, 1360), (680, 946), (688, 935), (731, 880), (748, 860)]