81327490

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^2\times {\mathrm{107}}^1\times {\mathrm{263}}^1$

素因数の和:411

約数の個数: 48

約数和(自身を含む): 157557312

約数和(自身を除く): 76229822

約数列:

[1, 2, 5, 10, 17, 34, 85, 107, 170, 214, 263, 289, 526, 535, 578, 1070, 1315, 1445, 1819, 2630, 2890, 3638, 4471, 8942, 9095, 18190, 22355, 28141, 30923, 44710, 56282, 61846, 76007, 140705, 152014, 154615, 281410, 309230, 380035, 478397, 760070, 956794, 2391985, 4783970, 8132749, 16265498, 40663745, 81327490]

約数ペア:

[(1, 81327490), (2, 40663745), (5, 16265498), (10, 8132749), (17, 4783970), (34, 2391985), (85, 956794), (107, 760070), (170, 478397), (214, 380035), (263, 309230), (289, 281410), (526, 154615), (535, 152014), (578, 140705), (1070, 76007), (1315, 61846), (1445, 56282), (1819, 44710), (2630, 30923), (2890, 28141), (3638, 22355), (4471, 18190), (8942, 9095)]