21694125

素因数分解:

$3^1\times 5^3\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{83}}^1$

素因数の和:159

約数の個数: 64

約数和(自身を含む): 39626496

約数和(自身を除く): 17932371

約数列:

[1, 3, 5, 15, 17, 25, 41, 51, 75, 83, 85, 123, 125, 205, 249, 255, 375, 415, 425, 615, 697, 1025, 1245, 1275, 1411, 2075, 2091, 2125, 3075, 3403, 3485, 4233, 5125, 6225, 6375, 7055, 10209, 10375, 10455, 15375, 17015, 17425, 21165, 31125, 35275, 51045, 52275, 57851, 85075, 87125, 105825, 173553, 176375, 255225, 261375, 289255, 425375, 529125, 867765, 1276125, 1446275, 4338825, 7231375, 21694125]

約数ペア:

[(1, 21694125), (3, 7231375), (5, 4338825), (15, 1446275), (17, 1276125), (25, 867765), (41, 529125), (51, 425375), (75, 289255), (83, 261375), (85, 255225), (123, 176375), (125, 173553), (205, 105825), (249, 87125), (255, 85075), (375, 57851), (415, 52275), (425, 51045), (615, 35275), (697, 31125), (1025, 21165), (1245, 17425), (1275, 17015), (1411, 15375), (2075, 10455), (2091, 10375), (2125, 10209), (3075, 7055), (3403, 6375), (3485, 6225), (4233, 5125)]