290421

素因数分解:

$3^2\times {\mathrm{23}}^2\times {\mathrm{61}}^1$

素因数の和:113

約数の個数: 18

約数和(自身を含む): 445718

約数和(自身を除く): 155297

約数列:

[1, 3, 9, 23, 61, 69, 183, 207, 529, 549, 1403, 1587, 4209, 4761, 12627, 32269, 96807, 290421]

約数ペア:

[(1, 290421), (3, 96807), (9, 32269), (23, 12627), (61, 4761), (69, 4209), (183, 1587), (207, 1403), (529, 549)]