21428085

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{2293}}^1$

素因数の和:2397

約数の個数: 32

約数和(自身を含む): 39640320

約数和(自身を除く): 18212235

約数列:

[1, 3, 5, 7, 15, 21, 35, 89, 105, 267, 445, 623, 1335, 1869, 2293, 3115, 6879, 9345, 11465, 16051, 34395, 48153, 80255, 204077, 240765, 612231, 1020385, 1428539, 3061155, 4285617, 7142695, 21428085]

約数ペア:

[(1, 21428085), (3, 7142695), (5, 4285617), (7, 3061155), (15, 1428539), (21, 1020385), (35, 612231), (89, 240765), (105, 204077), (267, 80255), (445, 48153), (623, 34395), (1335, 16051), (1869, 11465), (2293, 9345), (3115, 6879)]