20687750

素因数分解:

$2^1\times 5^3\times {\mathrm{83}}^1\times {\mathrm{997}}^1$

素因数の和:1097

約数の個数: 32

約数和(自身を含む): 39233376

約数和(自身を除く): 18545626

約数列:

[1, 2, 5, 10, 25, 50, 83, 125, 166, 250, 415, 830, 997, 1994, 2075, 4150, 4985, 9970, 10375, 20750, 24925, 49850, 82751, 124625, 165502, 249250, 413755, 827510, 2068775, 4137550, 10343875, 20687750]

約数ペア:

[(1, 20687750), (2, 10343875), (5, 4137550), (10, 2068775), (25, 827510), (50, 413755), (83, 249250), (125, 165502), (166, 124625), (250, 82751), (415, 49850), (830, 24925), (997, 20750), (1994, 10375), (2075, 9970), (4150, 4985)]