19914903939

素因数分解:

$3^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{3661501}}^1$

素因数の和:3661555

約数の個数: 24

約数和(自身を含む): 31723253328

約数和(自身を除く): 11808349389

約数列:

[1, 3, 7, 21, 37, 49, 111, 147, 259, 777, 1813, 5439, 3661501, 10984503, 25630507, 76891521, 135475537, 179413549, 406426611, 538240647, 948328759, 2844986277, 6638301313, 19914903939]

約数ペア:

[(1, 19914903939), (3, 6638301313), (7, 2844986277), (21, 948328759), (37, 538240647), (49, 406426611), (111, 179413549), (147, 135475537), (259, 76891521), (777, 25630507), (1813, 10984503), (5439, 3661501)]