16720977

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{2663}}^1$

素因数の和:2709

約数の個数: 32

約数和(自身を含む): 28643328

約数和(自身を除く): 11922351

約数列:

[1, 3, 7, 13, 21, 23, 39, 69, 91, 161, 273, 299, 483, 897, 2093, 2663, 6279, 7989, 18641, 34619, 55923, 61249, 103857, 183747, 242333, 428743, 726999, 796237, 1286229, 2388711, 5573659, 16720977]

約数ペア:

[(1, 16720977), (3, 5573659), (7, 2388711), (13, 1286229), (21, 796237), (23, 726999), (39, 428743), (69, 242333), (91, 183747), (161, 103857), (273, 61249), (299, 55923), (483, 34619), (897, 18641), (2093, 7989), (2663, 6279)]