21905315

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{2843}}^1$

素因数の和:2938

約数の個数: 16

約数和(自身を含む): 27848448

約数和(自身を除く): 5943133

約数列:

[1, 5, 23, 67, 115, 335, 1541, 2843, 7705, 14215, 65389, 190481, 326945, 952405, 4381063, 21905315]

約数ペア:

[(1, 21905315), (5, 4381063), (23, 952405), (67, 326945), (115, 190481), (335, 65389), (1541, 14215), (2843, 7705)]