321640

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1$

素因数の和:82

約数の個数: 64

約数和(自身を含む): 855360

約数和(自身を除く): 533720

約数列:

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

約数ペア:

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