21138015

素因数分解:

$3^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{29983}}^1$

素因数の和:30038

約数の個数: 16

約数和(自身を含む): 34541568

約数和(自身を除く): 13403553

約数列:

[1, 3, 5, 15, 47, 141, 235, 705, 29983, 89949, 149915, 449745, 1409201, 4227603, 7046005, 21138015]

約数ペア:

[(1, 21138015), (3, 7046005), (5, 4227603), (15, 1409201), (47, 449745), (141, 149915), (235, 89949), (705, 29983)]