21557008

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{2311}}^1$

素因数の和:2383

約数の個数: 40

約数和(自身を含む): 46443456

約数和(自身を除く): 24886448

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 53, 88, 106, 176, 212, 424, 583, 848, 1166, 2311, 2332, 4622, 4664, 9244, 9328, 18488, 25421, 36976, 50842, 101684, 122483, 203368, 244966, 406736, 489932, 979864, 1347313, 1959728, 2694626, 5389252, 10778504, 21557008]

約数ペア:

[(1, 21557008), (2, 10778504), (4, 5389252), (8, 2694626), (11, 1959728), (16, 1347313), (22, 979864), (44, 489932), (53, 406736), (88, 244966), (106, 203368), (176, 122483), (212, 101684), (424, 50842), (583, 36976), (848, 25421), (1166, 18488), (2311, 9328), (2332, 9244), (4622, 4664)]