21347095

素因数分解:

$5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{89}}^2$

素因数の和:208

約数の個数: 36

約数和(自身を含む): 32877144

約数和(自身を除く): 11530049

約数列:

[1, 5, 7, 11, 35, 49, 55, 77, 89, 245, 385, 445, 539, 623, 979, 2695, 3115, 4361, 4895, 6853, 7921, 21805, 34265, 39605, 47971, 55447, 87131, 239855, 277235, 388129, 435655, 609917, 1940645, 3049585, 4269419, 21347095]

約数ペア:

[(1, 21347095), (5, 4269419), (7, 3049585), (11, 1940645), (35, 609917), (49, 435655), (55, 388129), (77, 277235), (89, 239855), (245, 87131), (385, 55447), (445, 47971), (539, 39605), (623, 34265), (979, 21805), (2695, 7921), (3115, 6853), (4361, 4895)]