20502680

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{2741}}^1$

素因数の和:2780

約数の個数: 64

約数和(自身を含む): 53304480

約数和(自身を除く): 32801800

約数列:

[1, 2, 4, 5, 8, 10, 11, 17, 20, 22, 34, 40, 44, 55, 68, 85, 88, 110, 136, 170, 187, 220, 340, 374, 440, 680, 748, 935, 1496, 1870, 2741, 3740, 5482, 7480, 10964, 13705, 21928, 27410, 30151, 46597, 54820, 60302, 93194, 109640, 120604, 150755, 186388, 232985, 241208, 301510, 372776, 465970, 512567, 603020, 931940, 1025134, 1206040, 1863880, 2050268, 2562835, 4100536, 5125670, 10251340, 20502680]

約数ペア:

[(1, 20502680), (2, 10251340), (4, 5125670), (5, 4100536), (8, 2562835), (10, 2050268), (11, 1863880), (17, 1206040), (20, 1025134), (22, 931940), (34, 603020), (40, 512567), (44, 465970), (55, 372776), (68, 301510), (85, 241208), (88, 232985), (110, 186388), (136, 150755), (170, 120604), (187, 109640), (220, 93194), (340, 60302), (374, 54820), (440, 46597), (680, 30151), (748, 27410), (935, 21928), (1496, 13705), (1870, 10964), (2741, 7480), (3740, 5482)]