21919989

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{3491}}^1$

素因数の和:3537

約数の個数: 32

約数和(自身を含む): 37545984

約数和(自身を除く): 15625995

約数列:

[1, 3, 7, 13, 21, 23, 39, 69, 91, 161, 273, 299, 483, 897, 2093, 3491, 6279, 10473, 24437, 45383, 73311, 80293, 136149, 240879, 317681, 562051, 953043, 1043809, 1686153, 3131427, 7306663, 21919989]

約数ペア:

[(1, 21919989), (3, 7306663), (7, 3131427), (13, 1686153), (21, 1043809), (23, 953043), (39, 562051), (69, 317681), (91, 240879), (161, 136149), (273, 80293), (299, 73311), (483, 45383), (897, 24437), (2093, 10473), (3491, 6279)]