21871545

素因数分解:

$3^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{18457}}^1$

素因数の和:18544

約数の個数: 16

約数和(自身を含む): 35439360

約数和(自身を除く): 13567815

約数列:

[1, 3, 5, 15, 79, 237, 395, 1185, 18457, 55371, 92285, 276855, 1458103, 4374309, 7290515, 21871545]

約数ペア:

[(1, 21871545), (3, 7290515), (5, 4374309), (15, 1458103), (79, 276855), (237, 92285), (395, 55371), (1185, 18457)]