20172663

素因数分解:

$3^2\times 7^2\times {\mathrm{149}}^1\times {\mathrm{307}}^1$

素因数の和:476

約数の個数: 36

約数和(自身を含む): 34234200

約数和(自身を除く): 14061537

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 149, 307, 441, 447, 921, 1043, 1341, 2149, 2763, 3129, 6447, 7301, 9387, 15043, 19341, 21903, 45129, 45743, 65709, 135387, 137229, 320201, 411687, 960603, 2241407, 2881809, 6724221, 20172663]

約数ペア:

[(1, 20172663), (3, 6724221), (7, 2881809), (9, 2241407), (21, 960603), (49, 411687), (63, 320201), (147, 137229), (149, 135387), (307, 65709), (441, 45743), (447, 45129), (921, 21903), (1043, 19341), (1341, 15043), (2149, 9387), (2763, 7301), (3129, 6447)]