648021250

素因数分解:

$2^1\times 5^4\times {\mathrm{518417}}^1$

素因数の和:518439

約数の個数: 20

約数和(自身を含む): 1214653374

約数和(自身を除く): 566632124

約数列:

[1, 2, 5, 10, 25, 50, 125, 250, 625, 1250, 518417, 1036834, 2592085, 5184170, 12960425, 25920850, 64802125, 129604250, 324010625, 648021250]

約数ペア:

[(1, 648021250), (2, 324010625), (5, 129604250), (10, 64802125), (25, 25920850), (50, 12960425), (125, 5184170), (250, 2592085), (625, 1036834), (1250, 518417)]