8978980

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{113}}^1\times {\mathrm{137}}^1$

素因数の和:288

約数の個数: 48

約数和(自身を含む): 19822320

約数和(自身を除く): 10843340

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 113, 116, 137, 145, 226, 274, 290, 452, 548, 565, 580, 685, 1130, 1370, 2260, 2740, 3277, 3973, 6554, 7946, 13108, 15481, 15892, 16385, 19865, 30962, 32770, 39730, 61924, 65540, 77405, 79460, 154810, 309620, 448949, 897898, 1795796, 2244745, 4489490, 8978980]

約数ペア:

[(1, 8978980), (2, 4489490), (4, 2244745), (5, 1795796), (10, 897898), (20, 448949), (29, 309620), (58, 154810), (113, 79460), (116, 77405), (137, 65540), (145, 61924), (226, 39730), (274, 32770), (290, 30962), (452, 19865), (548, 16385), (565, 15892), (580, 15481), (685, 13108), (1130, 7946), (1370, 6554), (2260, 3973), (2740, 3277)]