641979580

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{47}}^2\times {\mathrm{1321}}^1$

素因数の和:1435

約数の個数: 72

約数和(自身を含む): 1503812016

約数和(自身を除く): 861832436

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 47, 55, 94, 110, 188, 220, 235, 470, 517, 940, 1034, 1321, 2068, 2209, 2585, 2642, 4418, 5170, 5284, 6605, 8836, 10340, 11045, 13210, 14531, 22090, 24299, 26420, 29062, 44180, 48598, 58124, 62087, 72655, 97196, 121495, 124174, 145310, 242990, 248348, 290620, 310435, 485980, 620870, 682957, 1241740, 1365914, 2731828, 2918089, 3414785, 5836178, 6829570, 11672356, 13659140, 14590445, 29180890, 32098979, 58361780, 64197958, 128395916, 160494895, 320989790, 641979580]

約数ペア:

[(1, 641979580), (2, 320989790), (4, 160494895), (5, 128395916), (10, 64197958), (11, 58361780), (20, 32098979), (22, 29180890), (44, 14590445), (47, 13659140), (55, 11672356), (94, 6829570), (110, 5836178), (188, 3414785), (220, 2918089), (235, 2731828), (470, 1365914), (517, 1241740), (940, 682957), (1034, 620870), (1321, 485980), (2068, 310435), (2209, 290620), (2585, 248348), (2642, 242990), (4418, 145310), (5170, 124174), (5284, 121495), (6605, 97196), (8836, 72655), (10340, 62087), (11045, 58124), (13210, 48598), (14531, 44180), (22090, 29062), (24299, 26420)]