21962005

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{17783}}^1$

素因数の和:17820

約数の個数: 16

約数和(自身を含む): 29877120

約数和(自身を除く): 7915115

約数列:

[1, 5, 13, 19, 65, 95, 247, 1235, 17783, 88915, 231179, 337877, 1155895, 1689385, 4392401, 21962005]

約数ペア:

[(1, 21962005), (5, 4392401), (13, 1689385), (19, 1155895), (65, 337877), (95, 231179), (247, 88915), (1235, 17783)]