21392072

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{3881}}^1$

素因数の和:3953

約数の個数: 32

約数和(自身を含む): 44021880

約数和(自身を除く): 22629808

約数列:

[1, 2, 4, 8, 13, 26, 52, 53, 104, 106, 212, 424, 689, 1378, 2756, 3881, 5512, 7762, 15524, 31048, 50453, 100906, 201812, 205693, 403624, 411386, 822772, 1645544, 2674009, 5348018, 10696036, 21392072]

約数ペア:

[(1, 21392072), (2, 10696036), (4, 5348018), (8, 2674009), (13, 1645544), (26, 822772), (52, 411386), (53, 403624), (104, 205693), (106, 201812), (212, 100906), (424, 50453), (689, 31048), (1378, 15524), (2756, 7762), (3881, 5512)]