21536972

素因数分解:

$2^2\times {\mathrm{41}}^2\times {\mathrm{3203}}^1$

素因数の和:3289

約数の個数: 18

約数和(自身を含む): 38643444

約数和(自身を除く): 17106472

約数列:

[1, 2, 4, 41, 82, 164, 1681, 3203, 3362, 6406, 6724, 12812, 131323, 262646, 525292, 5384243, 10768486, 21536972]

約数ペア:

[(1, 21536972), (2, 10768486), (4, 5384243), (41, 525292), (82, 262646), (164, 131323), (1681, 12812), (3203, 6724), (3362, 6406)]