20887568

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{733}}^1$

素因数の和:891

約数の個数: 40

約数和(自身を含む): 43960728

約数和(自身を除く): 23073160

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 137, 208, 274, 548, 733, 1096, 1466, 1781, 2192, 2932, 3562, 5864, 7124, 9529, 11728, 14248, 19058, 28496, 38116, 76232, 100421, 152464, 200842, 401684, 803368, 1305473, 1606736, 2610946, 5221892, 10443784, 20887568]

約数ペア:

[(1, 20887568), (2, 10443784), (4, 5221892), (8, 2610946), (13, 1606736), (16, 1305473), (26, 803368), (52, 401684), (104, 200842), (137, 152464), (208, 100421), (274, 76232), (548, 38116), (733, 28496), (1096, 19058), (1466, 14248), (1781, 11728), (2192, 9529), (2932, 7124), (3562, 5864)]