20702178

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{3821}}^1$

素因数の和:3879

約数の個数: 48

約数和(自身を含む): 52468416

約数和(自身を除く): 31766238

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 43, 63, 86, 126, 129, 258, 301, 387, 602, 774, 903, 1806, 2709, 3821, 5418, 7642, 11463, 22926, 26747, 34389, 53494, 68778, 80241, 160482, 164303, 240723, 328606, 481446, 492909, 985818, 1150121, 1478727, 2300242, 2957454, 3450363, 6900726, 10351089, 20702178]

約数ペア:

[(1, 20702178), (2, 10351089), (3, 6900726), (6, 3450363), (7, 2957454), (9, 2300242), (14, 1478727), (18, 1150121), (21, 985818), (42, 492909), (43, 481446), (63, 328606), (86, 240723), (126, 164303), (129, 160482), (258, 80241), (301, 68778), (387, 53494), (602, 34389), (774, 26747), (903, 22926), (1806, 11463), (2709, 7642), (3821, 5418)]