21248595

素因数分解:

$3^3\times 5^1\times {\mathrm{107}}^1\times {\mathrm{1471}}^1$

素因数の和:1592

約数の個数: 32

約数和(自身を含む): 38154240

約数和(自身を除く): 16905645

約数列:

[1, 3, 5, 9, 15, 27, 45, 107, 135, 321, 535, 963, 1471, 1605, 2889, 4413, 4815, 7355, 13239, 14445, 22065, 39717, 66195, 157397, 198585, 472191, 786985, 1416573, 2360955, 4249719, 7082865, 21248595]

約数ペア:

[(1, 21248595), (3, 7082865), (5, 4249719), (9, 2360955), (15, 1416573), (27, 786985), (45, 472191), (107, 198585), (135, 157397), (321, 66195), (535, 39717), (963, 22065), (1471, 14445), (1605, 13239), (2889, 7355), (4413, 4815)]