81657999

素因数分解:

$3^2\times {\mathrm{31}}^1\times {\mathrm{541}}^2$

素因数の和:1119

約数の個数: 18

約数和(自身を含む): 121980768

約数和(自身を除く): 40322769

約数列:

[1, 3, 9, 31, 93, 279, 541, 1623, 4869, 16771, 50313, 150939, 292681, 878043, 2634129, 9073111, 27219333, 81657999]

約数ペア:

[(1, 81657999), (3, 27219333), (9, 9073111), (31, 2634129), (93, 878043), (279, 292681), (541, 150939), (1623, 50313), (4869, 16771)]