21254420

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{5683}}^1$

素因数の和:5720

約数の個数: 48

約数和(自身を含む): 51565248

約数和(自身を除く): 30310828

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, 5683, 11366, 22732, 28415, 56830, 62513, 96611, 113660, 125026, 193222, 250052, 312565, 386444, 483055, 625130, 966110, 1062721, 1250260, 1932220, 2125442, 4250884, 5313605, 10627210, 21254420]

約数ペア:

[(1, 21254420), (2, 10627210), (4, 5313605), (5, 4250884), (10, 2125442), (11, 1932220), (17, 1250260), (20, 1062721), (22, 966110), (34, 625130), (44, 483055), (55, 386444), (68, 312565), (85, 250052), (110, 193222), (170, 125026), (187, 113660), (220, 96611), (340, 62513), (374, 56830), (748, 28415), (935, 22732), (1870, 11366), (3740, 5683)]