21172551

素因数分解:

$3^1\times {\mathrm{61}}^1\times {\mathrm{127}}^1\times {\mathrm{911}}^1$

素因数の和:1102

約数の個数: 16

約数和(自身を含む): 28950528

約数和(自身を除く): 7777977

約数列:

[1, 3, 61, 127, 183, 381, 911, 2733, 7747, 23241, 55571, 115697, 166713, 347091, 7057517, 21172551]

約数ペア:

[(1, 21172551), (3, 7057517), (61, 347091), (127, 166713), (183, 115697), (381, 55571), (911, 23241), (2733, 7747)]