81960400

素因数分解:

$2^4\times 5^2\times {\mathrm{17}}^2\times {\mathrm{709}}^1$

素因数の和:761

約数の個数: 90

約数和(自身を含む): 209469170

約数和(自身を除く): 127508770

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 25, 34, 40, 50, 68, 80, 85, 100, 136, 170, 200, 272, 289, 340, 400, 425, 578, 680, 709, 850, 1156, 1360, 1418, 1445, 1700, 2312, 2836, 2890, 3400, 3545, 4624, 5672, 5780, 6800, 7090, 7225, 11344, 11560, 12053, 14180, 14450, 17725, 23120, 24106, 28360, 28900, 35450, 48212, 56720, 57800, 60265, 70900, 96424, 115600, 120530, 141800, 192848, 204901, 241060, 283600, 301325, 409802, 482120, 602650, 819604, 964240, 1024505, 1205300, 1639208, 2049010, 2410600, 3278416, 4098020, 4821200, 5122525, 8196040, 10245050, 16392080, 20490100, 40980200, 81960400]

約数ペア:

[(1, 81960400), (2, 40980200), (4, 20490100), (5, 16392080), (8, 10245050), (10, 8196040), (16, 5122525), (17, 4821200), (20, 4098020), (25, 3278416), (34, 2410600), (40, 2049010), (50, 1639208), (68, 1205300), (80, 1024505), (85, 964240), (100, 819604), (136, 602650), (170, 482120), (200, 409802), (272, 301325), (289, 283600), (340, 241060), (400, 204901), (425, 192848), (578, 141800), (680, 120530), (709, 115600), (850, 96424), (1156, 70900), (1360, 60265), (1418, 57800), (1445, 56720), (1700, 48212), (2312, 35450), (2836, 28900), (2890, 28360), (3400, 24106), (3545, 23120), (4624, 17725), (5672, 14450), (5780, 14180), (6800, 12053), (7090, 11560), (7225, 11344)]