21439425

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{97}}^1\times {\mathrm{421}}^1$

素因数の和:538

約数の個数: 48

約数和(自身を含む): 41025152

約数和(自身を除く): 19585727

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 75, 97, 105, 175, 291, 421, 485, 525, 679, 1263, 1455, 2037, 2105, 2425, 2947, 3395, 6315, 7275, 8841, 10185, 10525, 14735, 16975, 31575, 40837, 44205, 50925, 73675, 122511, 204185, 221025, 285859, 612555, 857577, 1020925, 1429295, 3062775, 4287885, 7146475, 21439425]

約数ペア:

[(1, 21439425), (3, 7146475), (5, 4287885), (7, 3062775), (15, 1429295), (21, 1020925), (25, 857577), (35, 612555), (75, 285859), (97, 221025), (105, 204185), (175, 122511), (291, 73675), (421, 50925), (485, 44205), (525, 40837), (679, 31575), (1263, 16975), (1455, 14735), (2037, 10525), (2105, 10185), (2425, 8841), (2947, 7275), (3395, 6315)]