212217831

素因数分解:

$3^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{71671}}^1$

素因数の和:71731

約数の個数: 24

約数和(自身を含む): 357786624

約数和(自身を除く): 145568793

約数列:

[1, 3, 7, 9, 21, 47, 63, 141, 329, 423, 987, 2961, 71671, 215013, 501697, 645039, 1505091, 3368537, 4515273, 10105611, 23579759, 30316833, 70739277, 212217831]

約数ペア:

[(1, 212217831), (3, 70739277), (7, 30316833), (9, 23579759), (21, 10105611), (47, 4515273), (63, 3368537), (141, 1505091), (329, 645039), (423, 501697), (987, 215013), (2961, 71671)]