21472539

素因数分解:

$3^1\times {\mathrm{11}}^2\times {\mathrm{149}}^1\times {\mathrm{397}}^1$

素因数の和:571

約数の個数: 24

約数和(自身を含む): 31760400

約数和(自身を除く): 10287861

約数列:

[1, 3, 11, 33, 121, 149, 363, 397, 447, 1191, 1639, 4367, 4917, 13101, 18029, 48037, 54087, 59153, 144111, 177459, 650683, 1952049, 7157513, 21472539]

約数ペア:

[(1, 21472539), (3, 7157513), (11, 1952049), (33, 650683), (121, 177459), (149, 144111), (363, 59153), (397, 54087), (447, 48037), (1191, 18029), (1639, 13101), (4367, 4917)]