19925180

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{47}}^2$

素因数の和:155

約数の個数: 72

約数和(自身を含む): 47776176

約数和(自身を除く): 27850996

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 41, 44, 47, 55, 82, 94, 110, 164, 188, 205, 220, 235, 410, 451, 470, 517, 820, 902, 940, 1034, 1804, 1927, 2068, 2209, 2255, 2585, 3854, 4418, 4510, 5170, 7708, 8836, 9020, 9635, 10340, 11045, 19270, 21197, 22090, 24299, 38540, 42394, 44180, 48598, 84788, 90569, 97196, 105985, 121495, 181138, 211970, 242990, 362276, 423940, 452845, 485980, 905690, 996259, 1811380, 1992518, 3985036, 4981295, 9962590, 19925180]

約数ペア:

[(1, 19925180), (2, 9962590), (4, 4981295), (5, 3985036), (10, 1992518), (11, 1811380), (20, 996259), (22, 905690), (41, 485980), (44, 452845), (47, 423940), (55, 362276), (82, 242990), (94, 211970), (110, 181138), (164, 121495), (188, 105985), (205, 97196), (220, 90569), (235, 84788), (410, 48598), (451, 44180), (470, 42394), (517, 38540), (820, 24299), (902, 22090), (940, 21197), (1034, 19270), (1804, 11045), (1927, 10340), (2068, 9635), (2209, 9020), (2255, 8836), (2585, 7708), (3854, 5170), (4418, 4510)]