19992687

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{1607}}^1$

素因数の和:1663

約数の個数: 32

約数和(自身を含む): 32417280

約数和(自身を除く): 12424593

約数列:

[1, 3, 11, 13, 29, 33, 39, 87, 143, 319, 377, 429, 957, 1131, 1607, 4147, 4821, 12441, 17677, 20891, 46603, 53031, 62673, 139809, 229801, 512633, 605839, 689403, 1537899, 1817517, 6664229, 19992687]

約数ペア:

[(1, 19992687), (3, 6664229), (11, 1817517), (13, 1537899), (29, 689403), (33, 605839), (39, 512633), (87, 229801), (143, 139809), (319, 62673), (377, 53031), (429, 46603), (957, 20891), (1131, 17677), (1607, 12441), (4147, 4821)]