21000962875

素因数分解:

$5^3\times {\mathrm{89}}^1\times {\mathrm{1887727}}^1$

素因数の和:1887831

約数の個数: 16

約数和(自身を含む): 26503701120

約数和(自身を除く): 5502738245

約数列:

[1, 5, 25, 89, 125, 445, 2225, 11125, 1887727, 9438635, 47193175, 168007703, 235965875, 840038515, 4200192575, 21000962875]

約数ペア:

[(1, 21000962875), (5, 4200192575), (25, 840038515), (89, 235965875), (125, 168007703), (445, 47193175), (2225, 9438635), (11125, 1887727)]