21252645

素因数分解:

$3^3\times 5^1\times {\mathrm{157427}}^1$

素因数の和:157441

約数の個数: 16

約数和(自身を含む): 37782720

約数和(自身を除く): 16530075

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 157427, 472281, 787135, 1416843, 2361405, 4250529, 7084215, 21252645]

約数ペア:

[(1, 21252645), (3, 7084215), (5, 4250529), (9, 2361405), (15, 1416843), (27, 787135), (45, 472281), (135, 157427)]