81685000

素因数分解:

$2^3\times 5^4\times {\mathrm{17}}^1\times {\mathrm{31}}^2$

素因数の和:105

約数の個数: 120

約数和(自身を含む): 209393910

約数和(自身を除く): 127708910

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 25, 31, 34, 40, 50, 62, 68, 85, 100, 124, 125, 136, 155, 170, 200, 248, 250, 310, 340, 425, 500, 527, 620, 625, 680, 775, 850, 961, 1000, 1054, 1240, 1250, 1550, 1700, 1922, 2108, 2125, 2500, 2635, 3100, 3400, 3844, 3875, 4216, 4250, 4805, 5000, 5270, 6200, 7688, 7750, 8500, 9610, 10540, 10625, 13175, 15500, 16337, 17000, 19220, 19375, 21080, 21250, 24025, 26350, 31000, 32674, 38440, 38750, 42500, 48050, 52700, 65348, 65875, 77500, 81685, 85000, 96100, 105400, 120125, 130696, 131750, 155000, 163370, 192200, 240250, 263500, 326740, 329375, 408425, 480500, 527000, 600625, 653480, 658750, 816850, 961000, 1201250, 1317500, 1633700, 2042125, 2402500, 2635000, 3267400, 4084250, 4805000, 8168500, 10210625, 16337000, 20421250, 40842500, 81685000]

約数ペア:

[(1, 81685000), (2, 40842500), (4, 20421250), (5, 16337000), (8, 10210625), (10, 8168500), (17, 4805000), (20, 4084250), (25, 3267400), (31, 2635000), (34, 2402500), (40, 2042125), (50, 1633700), (62, 1317500), (68, 1201250), (85, 961000), (100, 816850), (124, 658750), (125, 653480), (136, 600625), (155, 527000), (170, 480500), (200, 408425), (248, 329375), (250, 326740), (310, 263500), (340, 240250), (425, 192200), (500, 163370), (527, 155000), (620, 131750), (625, 130696), (680, 120125), (775, 105400), (850, 96100), (961, 85000), (1000, 81685), (1054, 77500), (1240, 65875), (1250, 65348), (1550, 52700), (1700, 48050), (1922, 42500), (2108, 38750), (2125, 38440), (2500, 32674), (2635, 31000), (3100, 26350), (3400, 24025), (3844, 21250), (3875, 21080), (4216, 19375), (4250, 19220), (4805, 17000), (5000, 16337), (5270, 15500), (6200, 13175), (7688, 10625), (7750, 10540), (8500, 9610)]