21239296

素因数分解:

$2^9\times {\mathrm{13}}^1\times {\mathrm{3191}}^1$

素因数の和:3222

約数の個数: 40

約数和(自身を含む): 45715824

約数和(自身を除く): 24476528

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 64, 104, 128, 208, 256, 416, 512, 832, 1664, 3191, 3328, 6382, 6656, 12764, 25528, 41483, 51056, 82966, 102112, 165932, 204224, 331864, 408448, 663728, 816896, 1327456, 1633792, 2654912, 5309824, 10619648, 21239296]

約数ペア:

[(1, 21239296), (2, 10619648), (4, 5309824), (8, 2654912), (13, 1633792), (16, 1327456), (26, 816896), (32, 663728), (52, 408448), (64, 331864), (104, 204224), (128, 165932), (208, 102112), (256, 82966), (416, 51056), (512, 41483), (832, 25528), (1664, 12764), (3191, 6656), (3328, 6382)]