218989580

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{263}}^1$

素因数の和:399

約数の個数: 96

約数和(自身を含む): 510935040

約数和(自身を除く): 291945460

約数列:

[1, 2, 4, 5, 10, 17, 20, 31, 34, 62, 68, 79, 85, 124, 155, 158, 170, 263, 310, 316, 340, 395, 526, 527, 620, 790, 1052, 1054, 1315, 1343, 1580, 2108, 2449, 2630, 2635, 2686, 4471, 4898, 5260, 5270, 5372, 6715, 8153, 8942, 9796, 10540, 12245, 13430, 16306, 17884, 20777, 22355, 24490, 26860, 32612, 40765, 41554, 41633, 44710, 48980, 81530, 83108, 83266, 89420, 103885, 138601, 163060, 166532, 207770, 208165, 277202, 353209, 415540, 416330, 554404, 644087, 693005, 706418, 832660, 1288174, 1386010, 1412836, 1766045, 2576348, 2772020, 3220435, 3532090, 6440870, 7064180, 10949479, 12881740, 21898958, 43797916, 54747395, 109494790, 218989580]

約数ペア:

[(1, 218989580), (2, 109494790), (4, 54747395), (5, 43797916), (10, 21898958), (17, 12881740), (20, 10949479), (31, 7064180), (34, 6440870), (62, 3532090), (68, 3220435), (79, 2772020), (85, 2576348), (124, 1766045), (155, 1412836), (158, 1386010), (170, 1288174), (263, 832660), (310, 706418), (316, 693005), (340, 644087), (395, 554404), (526, 416330), (527, 415540), (620, 353209), (790, 277202), (1052, 208165), (1054, 207770), (1315, 166532), (1343, 163060), (1580, 138601), (2108, 103885), (2449, 89420), (2630, 83266), (2635, 83108), (2686, 81530), (4471, 48980), (4898, 44710), (5260, 41633), (5270, 41554), (5372, 40765), (6715, 32612), (8153, 26860), (8942, 24490), (9796, 22355), (10540, 20777), (12245, 17884), (13430, 16306)]