81861080

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{9431}}^1$

素因数の和:9480

約数の個数: 64

約数和(自身を含む): 217313280

約数和(自身を除く): 135452200

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 31, 35, 40, 56, 62, 70, 124, 140, 155, 217, 248, 280, 310, 434, 620, 868, 1085, 1240, 1736, 2170, 4340, 8680, 9431, 18862, 37724, 47155, 66017, 75448, 94310, 132034, 188620, 264068, 292361, 330085, 377240, 528136, 584722, 660170, 1169444, 1320340, 1461805, 2046527, 2338888, 2640680, 2923610, 4093054, 5847220, 8186108, 10232635, 11694440, 16372216, 20465270, 40930540, 81861080]

約数ペア:

[(1, 81861080), (2, 40930540), (4, 20465270), (5, 16372216), (7, 11694440), (8, 10232635), (10, 8186108), (14, 5847220), (20, 4093054), (28, 2923610), (31, 2640680), (35, 2338888), (40, 2046527), (56, 1461805), (62, 1320340), (70, 1169444), (124, 660170), (140, 584722), (155, 528136), (217, 377240), (248, 330085), (280, 292361), (310, 264068), (434, 188620), (620, 132034), (868, 94310), (1085, 75448), (1240, 66017), (1736, 47155), (2170, 37724), (4340, 18862), (8680, 9431)]