20911107

素因数分解:

$3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{149}}^1\times {\mathrm{163}}^1$

素因数の和:363

約数の個数: 32

約数和(自身を含む): 33062400

約数和(自身を除く): 12151293

約数列:

[1, 3, 7, 21, 41, 123, 149, 163, 287, 447, 489, 861, 1043, 1141, 3129, 3423, 6109, 6683, 18327, 20049, 24287, 42763, 46781, 72861, 128289, 140343, 170009, 510027, 995767, 2987301, 6970369, 20911107]

約数ペア:

[(1, 20911107), (3, 6970369), (7, 2987301), (21, 995767), (41, 510027), (123, 170009), (149, 140343), (163, 128289), (287, 72861), (447, 46781), (489, 42763), (861, 24287), (1043, 20049), (1141, 18327), (3129, 6683), (3423, 6109)]