21455145

素因数分解:

$3^3\times 5^1\times {\mathrm{158927}}^1$

素因数の和:158941

約数の個数: 16

約数和(自身を含む): 38142720

約数和(自身を除く): 16687575

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 158927, 476781, 794635, 1430343, 2383905, 4291029, 7151715, 21455145]

約数ペア:

[(1, 21455145), (3, 7151715), (5, 4291029), (9, 2383905), (15, 1430343), (27, 794635), (45, 476781), (135, 158927)]