20762720

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{251}}^1$

素因数の和:324

約数の個数: 96

約数和(自身を含む): 54867456

約数和(自身を除く): 34104736

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 47, 55, 80, 88, 94, 110, 160, 176, 188, 220, 235, 251, 352, 376, 440, 470, 502, 517, 752, 880, 940, 1004, 1034, 1255, 1504, 1760, 1880, 2008, 2068, 2510, 2585, 2761, 3760, 4016, 4136, 5020, 5170, 5522, 7520, 8032, 8272, 10040, 10340, 11044, 11797, 13805, 16544, 20080, 20680, 22088, 23594, 27610, 40160, 41360, 44176, 47188, 55220, 58985, 82720, 88352, 94376, 110440, 117970, 129767, 188752, 220880, 235940, 259534, 377504, 441760, 471880, 519068, 648835, 943760, 1038136, 1297670, 1887520, 2076272, 2595340, 4152544, 5190680, 10381360, 20762720]

約数ペア:

[(1, 20762720), (2, 10381360), (4, 5190680), (5, 4152544), (8, 2595340), (10, 2076272), (11, 1887520), (16, 1297670), (20, 1038136), (22, 943760), (32, 648835), (40, 519068), (44, 471880), (47, 441760), (55, 377504), (80, 259534), (88, 235940), (94, 220880), (110, 188752), (160, 129767), (176, 117970), (188, 110440), (220, 94376), (235, 88352), (251, 82720), (352, 58985), (376, 55220), (440, 47188), (470, 44176), (502, 41360), (517, 40160), (752, 27610), (880, 23594), (940, 22088), (1004, 20680), (1034, 20080), (1255, 16544), (1504, 13805), (1760, 11797), (1880, 11044), (2008, 10340), (2068, 10040), (2510, 8272), (2585, 8032), (2761, 7520), (3760, 5522), (4016, 5170), (4136, 5020)]