19553121

素因数分解:

$3^2\times 7^1\times {\mathrm{149}}^1\times {\mathrm{2083}}^1$

素因数の和:2245

約数の個数: 24

約数和(自身を含む): 32510400

約数和(自身を除く): 12957279

約数列:

[1, 3, 7, 9, 21, 63, 149, 447, 1043, 1341, 2083, 3129, 6249, 9387, 14581, 18747, 43743, 131229, 310367, 931101, 2172569, 2793303, 6517707, 19553121]

約数ペア:

[(1, 19553121), (3, 6517707), (7, 2793303), (9, 2172569), (21, 931101), (63, 310367), (149, 131229), (447, 43743), (1043, 18747), (1341, 14581), (2083, 9387), (3129, 6249)]