20575568

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{3191}}^1$

素因数の和:3243

約数の個数: 40

約数和(自身を含む): 44330496

約数和(自身を除く): 23754928

約数列:

[1, 2, 4, 8, 13, 16, 26, 31, 52, 62, 104, 124, 208, 248, 403, 496, 806, 1612, 3191, 3224, 6382, 6448, 12764, 25528, 41483, 51056, 82966, 98921, 165932, 197842, 331864, 395684, 663728, 791368, 1285973, 1582736, 2571946, 5143892, 10287784, 20575568]

約数ペア:

[(1, 20575568), (2, 10287784), (4, 5143892), (8, 2571946), (13, 1582736), (16, 1285973), (26, 791368), (31, 663728), (52, 395684), (62, 331864), (104, 197842), (124, 165932), (208, 98921), (248, 82966), (403, 51056), (496, 41483), (806, 25528), (1612, 12764), (3191, 6448), (3224, 6382)]