66748900

素因数分解:

$2^2\times 5^2\times {\mathrm{19}}^2\times {\mathrm{43}}^2$

素因数の和:138

約数の個数: 81

約数和(自身を含む): 156507561

約数和(自身を除く): 89758661

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 43, 50, 76, 86, 95, 100, 172, 190, 215, 361, 380, 430, 475, 722, 817, 860, 950, 1075, 1444, 1634, 1805, 1849, 1900, 2150, 3268, 3610, 3698, 4085, 4300, 7220, 7396, 8170, 9025, 9245, 15523, 16340, 18050, 18490, 20425, 31046, 35131, 36100, 36980, 40850, 46225, 62092, 70262, 77615, 81700, 92450, 140524, 155230, 175655, 184900, 310460, 351310, 388075, 667489, 702620, 776150, 878275, 1334978, 1552300, 1756550, 2669956, 3337445, 3513100, 6674890, 13349780, 16687225, 33374450, 66748900]

約数ペア:

[(1, 66748900), (2, 33374450), (4, 16687225), (5, 13349780), (10, 6674890), (19, 3513100), (20, 3337445), (25, 2669956), (38, 1756550), (43, 1552300), (50, 1334978), (76, 878275), (86, 776150), (95, 702620), (100, 667489), (172, 388075), (190, 351310), (215, 310460), (361, 184900), (380, 175655), (430, 155230), (475, 140524), (722, 92450), (817, 81700), (860, 77615), (950, 70262), (1075, 62092), (1444, 46225), (1634, 40850), (1805, 36980), (1849, 36100), (1900, 35131), (2150, 31046), (3268, 20425), (3610, 18490), (3698, 18050), (4085, 16340), (4300, 15523), (7220, 9245), (7396, 9025)]