21821860

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^2\times {\mathrm{797}}^1$

素因数の和:880

約数の個数: 36

約数和(自身を含む): 47157012

約数和(自身を除く): 25335152

約数列:

[1, 2, 4, 5, 10, 20, 37, 74, 148, 185, 370, 740, 797, 1369, 1594, 2738, 3188, 3985, 5476, 6845, 7970, 13690, 15940, 27380, 29489, 58978, 117956, 147445, 294890, 589780, 1091093, 2182186, 4364372, 5455465, 10910930, 21821860]

約数ペア:

[(1, 21821860), (2, 10910930), (4, 5455465), (5, 4364372), (10, 2182186), (20, 1091093), (37, 589780), (74, 294890), (148, 147445), (185, 117956), (370, 58978), (740, 29489), (797, 27380), (1369, 15940), (1594, 13690), (2738, 7970), (3188, 6845), (3985, 5476)]