21123088

素因数分解:

$2^4\times 7^1\times {\mathrm{151}}^1\times {\mathrm{1249}}^1$

素因数の和:1415

約数の個数: 40

約数和(自身を含む): 47120000

約数和(自身を除く): 25996912

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 151, 302, 604, 1057, 1208, 1249, 2114, 2416, 2498, 4228, 4996, 8456, 8743, 9992, 16912, 17486, 19984, 34972, 69944, 139888, 188599, 377198, 754396, 1320193, 1508792, 2640386, 3017584, 5280772, 10561544, 21123088]

約数ペア:

[(1, 21123088), (2, 10561544), (4, 5280772), (7, 3017584), (8, 2640386), (14, 1508792), (16, 1320193), (28, 754396), (56, 377198), (112, 188599), (151, 139888), (302, 69944), (604, 34972), (1057, 19984), (1208, 17486), (1249, 16912), (2114, 9992), (2416, 8743), (2498, 8456), (4228, 4996)]