81202280

素因数分解:

$2^3\times 5^1\times {\mathrm{73}}^1\times {\mathrm{27809}}^1$

素因数の和:27893

約数の個数: 32

約数和(自身を含む): 185214600

約数和(自身を除く): 104012320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 73, 146, 292, 365, 584, 730, 1460, 2920, 27809, 55618, 111236, 139045, 222472, 278090, 556180, 1112360, 2030057, 4060114, 8120228, 10150285, 16240456, 20300570, 40601140, 81202280]

約数ペア:

[(1, 81202280), (2, 40601140), (4, 20300570), (5, 16240456), (8, 10150285), (10, 8120228), (20, 4060114), (40, 2030057), (73, 1112360), (146, 556180), (292, 278090), (365, 222472), (584, 139045), (730, 111236), (1460, 55618), (2920, 27809)]