21164355

素因数分解:

$3^3\times 5^1\times {\mathrm{211}}^1\times {\mathrm{743}}^1$

素因数の和:968

約数の個数: 32

約数和(自身を含む): 37854720

約数和(自身を除く): 16690365

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 211, 633, 743, 1055, 1899, 2229, 3165, 3715, 5697, 6687, 9495, 11145, 20061, 28485, 33435, 100305, 156773, 470319, 783865, 1410957, 2351595, 4232871, 7054785, 21164355]

約数ペア:

[(1, 21164355), (3, 7054785), (5, 4232871), (9, 2351595), (15, 1410957), (27, 783865), (45, 470319), (135, 156773), (211, 100305), (633, 33435), (743, 28485), (1055, 20061), (1899, 11145), (2229, 9495), (3165, 6687), (3715, 5697)]