21955087

素因数分解:

$7^3\times {\mathrm{11}}^2\times {\mathrm{23}}^2$

素因数の和:89

約数の個数: 36

約数和(自身を含む): 29419600

約数和(自身を除く): 7464513

約数列:

[1, 7, 11, 23, 49, 77, 121, 161, 253, 343, 529, 539, 847, 1127, 1771, 2783, 3703, 3773, 5819, 5929, 7889, 12397, 19481, 25921, 40733, 41503, 64009, 86779, 136367, 181447, 285131, 448063, 954569, 1995917, 3136441, 21955087]

約数ペア:

[(1, 21955087), (7, 3136441), (11, 1995917), (23, 954569), (49, 448063), (77, 285131), (121, 181447), (161, 136367), (253, 86779), (343, 64009), (529, 41503), (539, 40733), (847, 25921), (1127, 19481), (1771, 12397), (2783, 7889), (3703, 5929), (3773, 5819)]