21131145

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{59}}^1\times {\mathrm{379}}^1$

素因数の和:459

約数の個数: 64

約数和(自身を含む): 43776000

約数和(自身を除く): 22644855

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 59, 63, 105, 135, 177, 189, 295, 315, 379, 413, 531, 885, 945, 1137, 1239, 1593, 1895, 2065, 2653, 2655, 3411, 3717, 5685, 6195, 7959, 7965, 10233, 11151, 13265, 17055, 18585, 22361, 23877, 39795, 51165, 55755, 67083, 71631, 111805, 119385, 156527, 201249, 335415, 358155, 469581, 603747, 782635, 1006245, 1408743, 2347905, 3018735, 4226229, 7043715, 21131145]

約数ペア:

[(1, 21131145), (3, 7043715), (5, 4226229), (7, 3018735), (9, 2347905), (15, 1408743), (21, 1006245), (27, 782635), (35, 603747), (45, 469581), (59, 358155), (63, 335415), (105, 201249), (135, 156527), (177, 119385), (189, 111805), (295, 71631), (315, 67083), (379, 55755), (413, 51165), (531, 39795), (885, 23877), (945, 22361), (1137, 18585), (1239, 17055), (1593, 13265), (1895, 11151), (2065, 10233), (2653, 7965), (2655, 7959), (3411, 6195), (3717, 5685)]