20792205

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{149}}^1\times {\mathrm{443}}^1$

素因数の和:610

約数の個数: 48

約数和(自身を含む): 41558400

約数和(自身を除く): 20766195

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 149, 315, 443, 447, 745, 1043, 1329, 1341, 2215, 2235, 3101, 3129, 3987, 5215, 6645, 6705, 9303, 9387, 15505, 15645, 19935, 27909, 46515, 46935, 66007, 139545, 198021, 330035, 462049, 594063, 990105, 1386147, 2310245, 2970315, 4158441, 6930735, 20792205]

約数ペア:

[(1, 20792205), (3, 6930735), (5, 4158441), (7, 2970315), (9, 2310245), (15, 1386147), (21, 990105), (35, 594063), (45, 462049), (63, 330035), (105, 198021), (149, 139545), (315, 66007), (443, 46935), (447, 46515), (745, 27909), (1043, 19935), (1329, 15645), (1341, 15505), (2215, 9387), (2235, 9303), (3101, 6705), (3129, 6645), (3987, 5215)]