86828980

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{41}}^1\times {\mathrm{2161}}^1$

素因数の和:2225

約数の個数: 72

約数和(自身を含む): 217384776

約数和(自身を除く): 130555796

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 41, 49, 70, 82, 98, 140, 164, 196, 205, 245, 287, 410, 490, 574, 820, 980, 1148, 1435, 2009, 2161, 2870, 4018, 4322, 5740, 8036, 8644, 10045, 10805, 15127, 20090, 21610, 30254, 40180, 43220, 60508, 75635, 88601, 105889, 151270, 177202, 211778, 302540, 354404, 423556, 443005, 529445, 620207, 886010, 1058890, 1240414, 1772020, 2117780, 2480828, 3101035, 4341449, 6202070, 8682898, 12404140, 17365796, 21707245, 43414490, 86828980]

約数ペア:

[(1, 86828980), (2, 43414490), (4, 21707245), (5, 17365796), (7, 12404140), (10, 8682898), (14, 6202070), (20, 4341449), (28, 3101035), (35, 2480828), (41, 2117780), (49, 1772020), (70, 1240414), (82, 1058890), (98, 886010), (140, 620207), (164, 529445), (196, 443005), (205, 423556), (245, 354404), (287, 302540), (410, 211778), (490, 177202), (574, 151270), (820, 105889), (980, 88601), (1148, 75635), (1435, 60508), (2009, 43220), (2161, 40180), (2870, 30254), (4018, 21610), (4322, 20090), (5740, 15127), (8036, 10805), (8644, 10045)]