21915465

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{601}}^1$

素因数の和:650

約数の個数: 64

約数和(自身を含む): 43690752

約数和(自身を除く): 21775287

約数列:

[1, 3, 5, 11, 13, 15, 17, 33, 39, 51, 55, 65, 85, 143, 165, 187, 195, 221, 255, 429, 561, 601, 663, 715, 935, 1105, 1803, 2145, 2431, 2805, 3005, 3315, 6611, 7293, 7813, 9015, 10217, 12155, 19833, 23439, 30651, 33055, 36465, 39065, 51085, 85943, 99165, 112387, 117195, 132821, 153255, 257829, 337161, 398463, 429715, 561935, 664105, 1289145, 1461031, 1685805, 1992315, 4383093, 7305155, 21915465]

約数ペア:

[(1, 21915465), (3, 7305155), (5, 4383093), (11, 1992315), (13, 1685805), (15, 1461031), (17, 1289145), (33, 664105), (39, 561935), (51, 429715), (55, 398463), (65, 337161), (85, 257829), (143, 153255), (165, 132821), (187, 117195), (195, 112387), (221, 99165), (255, 85943), (429, 51085), (561, 39065), (601, 36465), (663, 33055), (715, 30651), (935, 23439), (1105, 19833), (1803, 12155), (2145, 10217), (2431, 9015), (2805, 7813), (3005, 7293), (3315, 6611)]