16921515

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{811}}^1$

素因数の和:939

約数の個数: 32

約数和(自身を含む): 29465856

約数和(自身を除く): 12544341

約数列:

[1, 3, 5, 13, 15, 39, 65, 107, 195, 321, 535, 811, 1391, 1605, 2433, 4055, 4173, 6955, 10543, 12165, 20865, 31629, 52715, 86777, 158145, 260331, 433885, 1128101, 1301655, 3384303, 5640505, 16921515]

約数ペア:

[(1, 16921515), (3, 5640505), (5, 3384303), (13, 1301655), (15, 1128101), (39, 433885), (65, 260331), (107, 158145), (195, 86777), (321, 52715), (535, 31629), (811, 20865), (1391, 12165), (1605, 10543), (2433, 6955), (4055, 4173)]