78582500

素因数分解:

$2^2\times 5^4\times {\mathrm{17}}^1\times {\mathrm{43}}^2$

素因数の和:127

約数の個数: 90

約数和(自身を含む): 186282558

約数和(自身を除く): 107700058

約数列:

[1, 2, 4, 5, 10, 17, 20, 25, 34, 43, 50, 68, 85, 86, 100, 125, 170, 172, 215, 250, 340, 425, 430, 500, 625, 731, 850, 860, 1075, 1250, 1462, 1700, 1849, 2125, 2150, 2500, 2924, 3655, 3698, 4250, 4300, 5375, 7310, 7396, 8500, 9245, 10625, 10750, 14620, 18275, 18490, 21250, 21500, 26875, 31433, 36550, 36980, 42500, 46225, 53750, 62866, 73100, 91375, 92450, 107500, 125732, 157165, 182750, 184900, 231125, 314330, 365500, 456875, 462250, 628660, 785825, 913750, 924500, 1155625, 1571650, 1827500, 2311250, 3143300, 3929125, 4622500, 7858250, 15716500, 19645625, 39291250, 78582500]

約数ペア:

[(1, 78582500), (2, 39291250), (4, 19645625), (5, 15716500), (10, 7858250), (17, 4622500), (20, 3929125), (25, 3143300), (34, 2311250), (43, 1827500), (50, 1571650), (68, 1155625), (85, 924500), (86, 913750), (100, 785825), (125, 628660), (170, 462250), (172, 456875), (215, 365500), (250, 314330), (340, 231125), (425, 184900), (430, 182750), (500, 157165), (625, 125732), (731, 107500), (850, 92450), (860, 91375), (1075, 73100), (1250, 62866), (1462, 53750), (1700, 46225), (1849, 42500), (2125, 36980), (2150, 36550), (2500, 31433), (2924, 26875), (3655, 21500), (3698, 21250), (4250, 18490), (4300, 18275), (5375, 14620), (7310, 10750), (7396, 10625), (8500, 9245)]