71821640

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{151}}^1$

素因数の和:243

約数の個数: 128

約数和(自身を含む): 189112320

約数和(自身を除く): 117290680

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 23, 40, 44, 46, 47, 55, 88, 92, 94, 110, 115, 151, 184, 188, 220, 230, 235, 253, 302, 376, 440, 460, 470, 506, 517, 604, 755, 920, 940, 1012, 1034, 1081, 1208, 1265, 1510, 1661, 1880, 2024, 2068, 2162, 2530, 2585, 3020, 3322, 3473, 4136, 4324, 5060, 5170, 5405, 6040, 6644, 6946, 7097, 8305, 8648, 10120, 10340, 10810, 11891, 13288, 13892, 14194, 16610, 17365, 20680, 21620, 23782, 27784, 28388, 33220, 34730, 35485, 38203, 43240, 47564, 56776, 59455, 66440, 69460, 70970, 76406, 78067, 95128, 118910, 138920, 141940, 152812, 156134, 163231, 191015, 237820, 283880, 305624, 312268, 326462, 382030, 390335, 475640, 624536, 652924, 764060, 780670, 816155, 1305848, 1528120, 1561340, 1632310, 1795541, 3122680, 3264620, 3591082, 6529240, 7182164, 8977705, 14364328, 17955410, 35910820, 71821640]

約数ペア:

[(1, 71821640), (2, 35910820), (4, 17955410), (5, 14364328), (8, 8977705), (10, 7182164), (11, 6529240), (20, 3591082), (22, 3264620), (23, 3122680), (40, 1795541), (44, 1632310), (46, 1561340), (47, 1528120), (55, 1305848), (88, 816155), (92, 780670), (94, 764060), (110, 652924), (115, 624536), (151, 475640), (184, 390335), (188, 382030), (220, 326462), (230, 312268), (235, 305624), (253, 283880), (302, 237820), (376, 191015), (440, 163231), (460, 156134), (470, 152812), (506, 141940), (517, 138920), (604, 118910), (755, 95128), (920, 78067), (940, 76406), (1012, 70970), (1034, 69460), (1081, 66440), (1208, 59455), (1265, 56776), (1510, 47564), (1661, 43240), (1880, 38203), (2024, 35485), (2068, 34730), (2162, 33220), (2530, 28388), (2585, 27784), (3020, 23782), (3322, 21620), (3473, 20680), (4136, 17365), (4324, 16610), (5060, 14194), (5170, 13892), (5405, 13288), (6040, 11891), (6644, 10810), (6946, 10340), (7097, 10120), (8305, 8648)]