20121945

素因数分解:

$3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{109}}^1\times {\mathrm{397}}^1$

素因数の和:545

約数の個数: 32

約数和(自身を含む): 33623040

約数和(自身を除く): 13501095

約数列:

[1, 3, 5, 15, 31, 93, 109, 155, 327, 397, 465, 545, 1191, 1635, 1985, 3379, 5955, 10137, 12307, 16895, 36921, 43273, 50685, 61535, 129819, 184605, 216365, 649095, 1341463, 4024389, 6707315, 20121945]

約数ペア:

[(1, 20121945), (3, 6707315), (5, 4024389), (15, 1341463), (31, 649095), (93, 216365), (109, 184605), (155, 129819), (327, 61535), (397, 50685), (465, 43273), (545, 36921), (1191, 16895), (1635, 12307), (1985, 10137), (3379, 5955)]