620455

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{389}}^1$

素因数の和:434

約数の個数: 16

約数和(自身を含む): 842400

約数和(自身を除く): 221945

約数列:

[1, 5, 11, 29, 55, 145, 319, 389, 1595, 1945, 4279, 11281, 21395, 56405, 124091, 620455]

約数ペア:

[(1, 620455), (5, 124091), (11, 56405), (29, 21395), (55, 11281), (145, 4279), (319, 1945), (389, 1595)]