21971456

素因数分解:

$2^9\times {\mathrm{13}}^1\times {\mathrm{3301}}^1$

素因数の和:3332

約数の個数: 40

約数和(自身を含む): 47291244

約数和(自身を除く): 25319788

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 64, 104, 128, 208, 256, 416, 512, 832, 1664, 3301, 3328, 6602, 6656, 13204, 26408, 42913, 52816, 85826, 105632, 171652, 211264, 343304, 422528, 686608, 845056, 1373216, 1690112, 2746432, 5492864, 10985728, 21971456]

約数ペア:

[(1, 21971456), (2, 10985728), (4, 5492864), (8, 2746432), (13, 1690112), (16, 1373216), (26, 845056), (32, 686608), (52, 422528), (64, 343304), (104, 211264), (128, 171652), (208, 105632), (256, 85826), (416, 52816), (512, 42913), (832, 26408), (1664, 13204), (3301, 6656), (3328, 6602)]