81976920

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{15887}}^1$

素因数の和:15944

約数の個数: 64

約数和(自身を含む): 251665920

約数和(自身を除く): 169689000

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 43, 60, 86, 120, 129, 172, 215, 258, 344, 430, 516, 645, 860, 1032, 1290, 1720, 2580, 5160, 15887, 31774, 47661, 63548, 79435, 95322, 127096, 158870, 190644, 238305, 317740, 381288, 476610, 635480, 683141, 953220, 1366282, 1906440, 2049423, 2732564, 3415705, 4098846, 5465128, 6831410, 8197692, 10247115, 13662820, 16395384, 20494230, 27325640, 40988460, 81976920]

約数ペア:

[(1, 81976920), (2, 40988460), (3, 27325640), (4, 20494230), (5, 16395384), (6, 13662820), (8, 10247115), (10, 8197692), (12, 6831410), (15, 5465128), (20, 4098846), (24, 3415705), (30, 2732564), (40, 2049423), (43, 1906440), (60, 1366282), (86, 953220), (120, 683141), (129, 635480), (172, 476610), (215, 381288), (258, 317740), (344, 238305), (430, 190644), (516, 158870), (645, 127096), (860, 95322), (1032, 79435), (1290, 63548), (1720, 47661), (2580, 31774), (5160, 15887)]