20438889

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{269}}^1$

素因数の和:365

約数の個数: 32

約数和(自身を含む): 30412800

約数和(自身を除く): 9973911

約数列:

[1, 3, 19, 31, 43, 57, 93, 129, 269, 589, 807, 817, 1333, 1767, 2451, 3999, 5111, 8339, 11567, 15333, 25017, 25327, 34701, 75981, 158441, 219773, 358577, 475323, 659319, 1075731, 6812963, 20438889]

約数ペア:

[(1, 20438889), (3, 6812963), (19, 1075731), (31, 659319), (43, 475323), (57, 358577), (93, 219773), (129, 158441), (269, 75981), (589, 34701), (807, 25327), (817, 25017), (1333, 15333), (1767, 11567), (2451, 8339), (3999, 5111)]