20031605

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{661}}^1$

素因数の和:725

約数の個数: 32

約数和(自身を含む): 28598400

約数和(自身を除く): 8566795

約数列:

[1, 5, 11, 19, 29, 55, 95, 145, 209, 319, 551, 661, 1045, 1595, 2755, 3305, 6061, 7271, 12559, 19169, 30305, 36355, 62795, 95845, 138149, 210859, 364211, 690745, 1054295, 1821055, 4006321, 20031605]

約数ペア:

[(1, 20031605), (5, 4006321), (11, 1821055), (19, 1054295), (29, 690745), (55, 364211), (95, 210859), (145, 138149), (209, 95845), (319, 62795), (551, 36355), (661, 30305), (1045, 19169), (1595, 12559), (2755, 7271), (3305, 6061)]