81618700

素因数分解:

$2^2\times 5^2\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{1171}}^1$

素因数の和:1243

約数の個数: 72

約数和(自身を含む): 192268944

約数和(自身を除く): 110650244

約数列:

[1, 2, 4, 5, 10, 17, 20, 25, 34, 41, 50, 68, 82, 85, 100, 164, 170, 205, 340, 410, 425, 697, 820, 850, 1025, 1171, 1394, 1700, 2050, 2342, 2788, 3485, 4100, 4684, 5855, 6970, 11710, 13940, 17425, 19907, 23420, 29275, 34850, 39814, 48011, 58550, 69700, 79628, 96022, 99535, 117100, 192044, 199070, 240055, 398140, 480110, 497675, 816187, 960220, 995350, 1200275, 1632374, 1990700, 2400550, 3264748, 4080935, 4801100, 8161870, 16323740, 20404675, 40809350, 81618700]

約数ペア:

[(1, 81618700), (2, 40809350), (4, 20404675), (5, 16323740), (10, 8161870), (17, 4801100), (20, 4080935), (25, 3264748), (34, 2400550), (41, 1990700), (50, 1632374), (68, 1200275), (82, 995350), (85, 960220), (100, 816187), (164, 497675), (170, 480110), (205, 398140), (340, 240055), (410, 199070), (425, 192044), (697, 117100), (820, 99535), (850, 96022), (1025, 79628), (1171, 69700), (1394, 58550), (1700, 48011), (2050, 39814), (2342, 34850), (2788, 29275), (3485, 23420), (4100, 19907), (4684, 17425), (5855, 13940), (6970, 11710)]