21301275

素因数分解:

$3^1\times 5^2\times {\mathrm{191}}^1\times {\mathrm{1487}}^1$

素因数の和:1691

約数の個数: 24

約数和(自身を含む): 35426304

約数和(自身を除く): 14125029

約数列:

[1, 3, 5, 15, 25, 75, 191, 573, 955, 1487, 2865, 4461, 4775, 7435, 14325, 22305, 37175, 111525, 284017, 852051, 1420085, 4260255, 7100425, 21301275]

約数ペア:

[(1, 21301275), (3, 7100425), (5, 4260255), (15, 1420085), (25, 852051), (75, 284017), (191, 111525), (573, 37175), (955, 22305), (1487, 14325), (2865, 7435), (4461, 4775)]