20418896

素因数分解:

$2^4\times {\mathrm{61}}^1\times {\mathrm{20921}}^1$

素因数の和:20990

約数の個数: 20

約数和(自身を含む): 40212084

約数和(自身を除く): 19793188

約数列:

[1, 2, 4, 8, 16, 61, 122, 244, 488, 976, 20921, 41842, 83684, 167368, 334736, 1276181, 2552362, 5104724, 10209448, 20418896]

約数ペア:

[(1, 20418896), (2, 10209448), (4, 5104724), (8, 2552362), (16, 1276181), (61, 334736), (122, 167368), (244, 83684), (488, 41842), (976, 20921)]