21235376

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{32371}}^1$

素因数の和:32420

約数の個数: 20

約数和(自身を含む): 42148344

約数和(自身を除く): 20912968

約数列:

[1, 2, 4, 8, 16, 41, 82, 164, 328, 656, 32371, 64742, 129484, 258968, 517936, 1327211, 2654422, 5308844, 10617688, 21235376]

約数ペア:

[(1, 21235376), (2, 10617688), (4, 5308844), (8, 2654422), (16, 1327211), (41, 517936), (82, 258968), (164, 129484), (328, 64742), (656, 32371)]