18828905

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{4217}}^1$

素因数の和:4288

約数の個数: 16

約数和(自身を含む): 24295680

約数和(自身を除く): 5466775

約数列:

[1, 5, 19, 47, 95, 235, 893, 4217, 4465, 21085, 80123, 198199, 400615, 990995, 3765781, 18828905]

約数ペア:

[(1, 18828905), (5, 3765781), (19, 990995), (47, 400615), (95, 198199), (235, 80123), (893, 21085), (4217, 4465)]