21725645

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{3221}}^1$

素因数の和:3316

約数の個数: 16

約数和(自身を含む): 27838080

約数和(自身を除く): 6112435

約数列:

[1, 5, 19, 71, 95, 355, 1349, 3221, 6745, 16105, 61199, 228691, 305995, 1143455, 4345129, 21725645]

約数ペア:

[(1, 21725645), (5, 4345129), (19, 1143455), (71, 305995), (95, 228691), (355, 61199), (1349, 16105), (3221, 6745)]