21164660

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{5659}}^1$

素因数の和:5696

約数の個数: 48

約数和(自身を含む): 51347520

約数和(自身を除く): 30182860

約数列:

[1, 2, 4, 5, 10, 11, 17, 20, 22, 34, 44, 55, 68, 85, 110, 170, 187, 220, 340, 374, 748, 935, 1870, 3740, 5659, 11318, 22636, 28295, 56590, 62249, 96203, 113180, 124498, 192406, 248996, 311245, 384812, 481015, 622490, 962030, 1058233, 1244980, 1924060, 2116466, 4232932, 5291165, 10582330, 21164660]

約数ペア:

[(1, 21164660), (2, 10582330), (4, 5291165), (5, 4232932), (10, 2116466), (11, 1924060), (17, 1244980), (20, 1058233), (22, 962030), (34, 622490), (44, 481015), (55, 384812), (68, 311245), (85, 248996), (110, 192406), (170, 124498), (187, 113180), (220, 96203), (340, 62249), (374, 56590), (748, 28295), (935, 22636), (1870, 11318), (3740, 5659)]