21142220

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{5653}}^1$

素因数の和:5690

約数の個数: 48

約数和(自身を含む): 51293088

約数和(自身を除く): 30150868

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, 5653, 11306, 22612, 28265, 56530, 62183, 96101, 113060, 124366, 192202, 248732, 310915, 384404, 480505, 621830, 961010, 1057111, 1243660, 1922020, 2114222, 4228444, 5285555, 10571110, 21142220]

約数ペア:

[(1, 21142220), (2, 10571110), (4, 5285555), (5, 4228444), (10, 2114222), (11, 1922020), (17, 1243660), (20, 1057111), (22, 961010), (34, 621830), (44, 480505), (55, 384404), (68, 310915), (85, 248732), (110, 192202), (170, 124366), (187, 113060), (220, 96101), (340, 62183), (374, 56530), (748, 28265), (935, 22612), (1870, 11306), (3740, 5653)]