204212500

素因数分解:

$2^2\times 5^5\times {\mathrm{17}}^1\times {\mathrm{31}}^2$

素因数の和:108

約数の個数: 108

約数和(自身を含む): 488710908

約数和(自身を除く): 284498408

約数列:

[1, 2, 4, 5, 10, 17, 20, 25, 31, 34, 50, 62, 68, 85, 100, 124, 125, 155, 170, 250, 310, 340, 425, 500, 527, 620, 625, 775, 850, 961, 1054, 1250, 1550, 1700, 1922, 2108, 2125, 2500, 2635, 3100, 3125, 3844, 3875, 4250, 4805, 5270, 6250, 7750, 8500, 9610, 10540, 10625, 12500, 13175, 15500, 16337, 19220, 19375, 21250, 24025, 26350, 32674, 38750, 42500, 48050, 52700, 53125, 65348, 65875, 77500, 81685, 96100, 96875, 106250, 120125, 131750, 163370, 193750, 212500, 240250, 263500, 326740, 329375, 387500, 408425, 480500, 600625, 658750, 816850, 1201250, 1317500, 1633700, 1646875, 2042125, 2402500, 3003125, 3293750, 4084250, 6006250, 6587500, 8168500, 10210625, 12012500, 20421250, 40842500, 51053125, 102106250, 204212500]

約数ペア:

[(1, 204212500), (2, 102106250), (4, 51053125), (5, 40842500), (10, 20421250), (17, 12012500), (20, 10210625), (25, 8168500), (31, 6587500), (34, 6006250), (50, 4084250), (62, 3293750), (68, 3003125), (85, 2402500), (100, 2042125), (124, 1646875), (125, 1633700), (155, 1317500), (170, 1201250), (250, 816850), (310, 658750), (340, 600625), (425, 480500), (500, 408425), (527, 387500), (620, 329375), (625, 326740), (775, 263500), (850, 240250), (961, 212500), (1054, 193750), (1250, 163370), (1550, 131750), (1700, 120125), (1922, 106250), (2108, 96875), (2125, 96100), (2500, 81685), (2635, 77500), (3100, 65875), (3125, 65348), (3844, 53125), (3875, 52700), (4250, 48050), (4805, 42500), (5270, 38750), (6250, 32674), (7750, 26350), (8500, 24025), (9610, 21250), (10540, 19375), (10625, 19220), (12500, 16337), (13175, 15500)]