128215700

素因数分解:

$2^2\times 5^2\times {\mathrm{17}}^1\times {\mathrm{199}}^1\times {\mathrm{379}}^1$

素因数の和:609

約数の個数: 72

約数和(自身を含む): 296856000

約数和(自身を除く): 168640300

約数列:

[1, 2, 4, 5, 10, 17, 20, 25, 34, 50, 68, 85, 100, 170, 199, 340, 379, 398, 425, 758, 796, 850, 995, 1516, 1700, 1895, 1990, 3383, 3790, 3980, 4975, 6443, 6766, 7580, 9475, 9950, 12886, 13532, 16915, 18950, 19900, 25772, 32215, 33830, 37900, 64430, 67660, 75421, 84575, 128860, 150842, 161075, 169150, 301684, 322150, 338300, 377105, 644300, 754210, 1282157, 1508420, 1885525, 2564314, 3771050, 5128628, 6410785, 7542100, 12821570, 25643140, 32053925, 64107850, 128215700]

約数ペア:

[(1, 128215700), (2, 64107850), (4, 32053925), (5, 25643140), (10, 12821570), (17, 7542100), (20, 6410785), (25, 5128628), (34, 3771050), (50, 2564314), (68, 1885525), (85, 1508420), (100, 1282157), (170, 754210), (199, 644300), (340, 377105), (379, 338300), (398, 322150), (425, 301684), (758, 169150), (796, 161075), (850, 150842), (995, 128860), (1516, 84575), (1700, 75421), (1895, 67660), (1990, 64430), (3383, 37900), (3790, 33830), (3980, 32215), (4975, 25772), (6443, 19900), (6766, 18950), (7580, 16915), (9475, 13532), (9950, 12886)]