20809764

素因数分解:

$2^2\times 3^3\times {\mathrm{43}}^1\times {\mathrm{4481}}^1$

素因数の和:4537

約数の個数: 48

約数和(自身を含む): 55218240

約数和(自身を除く): 34408476

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 43, 54, 86, 108, 129, 172, 258, 387, 516, 774, 1161, 1548, 2322, 4481, 4644, 8962, 13443, 17924, 26886, 40329, 53772, 80658, 120987, 161316, 192683, 241974, 385366, 483948, 578049, 770732, 1156098, 1734147, 2312196, 3468294, 5202441, 6936588, 10404882, 20809764]

約数ペア:

[(1, 20809764), (2, 10404882), (3, 6936588), (4, 5202441), (6, 3468294), (9, 2312196), (12, 1734147), (18, 1156098), (27, 770732), (36, 578049), (43, 483948), (54, 385366), (86, 241974), (108, 192683), (129, 161316), (172, 120987), (258, 80658), (387, 53772), (516, 40329), (774, 26886), (1161, 17924), (1548, 13443), (2322, 8962), (4481, 4644)]