21406725

素因数分解:

$3^2\times 5^2\times {\mathrm{89}}^1\times {\mathrm{1069}}^1$

素因数の和:1174

約数の個数: 36

約数和(自身を含む): 38808900

約数和(自身を除く): 17402175

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 89, 225, 267, 445, 801, 1069, 1335, 2225, 3207, 4005, 5345, 6675, 9621, 16035, 20025, 26725, 48105, 80175, 95141, 240525, 285423, 475705, 856269, 1427115, 2378525, 4281345, 7135575, 21406725]

約数ペア:

[(1, 21406725), (3, 7135575), (5, 4281345), (9, 2378525), (15, 1427115), (25, 856269), (45, 475705), (75, 285423), (89, 240525), (225, 95141), (267, 80175), (445, 48105), (801, 26725), (1069, 20025), (1335, 16035), (2225, 9621), (3207, 6675), (4005, 5345)]