19708040

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{953}}^1$

素因数の和:1022

約数の個数: 64

約数和(自身を含む): 49455360

約数和(自身を除く): 29747320

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 47, 55, 88, 94, 110, 188, 220, 235, 376, 440, 470, 517, 940, 953, 1034, 1880, 1906, 2068, 2585, 3812, 4136, 4765, 5170, 7624, 9530, 10340, 10483, 19060, 20680, 20966, 38120, 41932, 44791, 52415, 83864, 89582, 104830, 179164, 209660, 223955, 358328, 419320, 447910, 492701, 895820, 985402, 1791640, 1970804, 2463505, 3941608, 4927010, 9854020, 19708040]

約数ペア:

[(1, 19708040), (2, 9854020), (4, 4927010), (5, 3941608), (8, 2463505), (10, 1970804), (11, 1791640), (20, 985402), (22, 895820), (40, 492701), (44, 447910), (47, 419320), (55, 358328), (88, 223955), (94, 209660), (110, 179164), (188, 104830), (220, 89582), (235, 83864), (376, 52415), (440, 44791), (470, 41932), (517, 38120), (940, 20966), (953, 20680), (1034, 19060), (1880, 10483), (1906, 10340), (2068, 9530), (2585, 7624), (3812, 5170), (4136, 4765)]