21605608

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{181}}^1\times {\mathrm{347}}^1$

素因数の和:577

約数の個数: 32

約数和(自身を含む): 41801760

約数和(自身を除く): 20196152

約数列:

[1, 2, 4, 8, 43, 86, 172, 181, 344, 347, 362, 694, 724, 1388, 1448, 2776, 7783, 14921, 15566, 29842, 31132, 59684, 62264, 62807, 119368, 125614, 251228, 502456, 2700701, 5401402, 10802804, 21605608]

約数ペア:

[(1, 21605608), (2, 10802804), (4, 5401402), (8, 2700701), (43, 502456), (86, 251228), (172, 125614), (181, 119368), (344, 62807), (347, 62264), (362, 59684), (694, 31132), (724, 29842), (1388, 15566), (1448, 14921), (2776, 7783)]