199904955

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{317}}^1\times {\mathrm{2473}}^1$

素因数の和:2815

約数の個数: 32

約数和(自身を含む): 339868224

約数和(自身を除く): 139963269

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 317, 951, 1585, 2473, 4755, 5389, 7419, 12365, 16167, 26945, 37095, 42041, 80835, 126123, 210205, 630615, 783941, 2351823, 3919705, 11759115, 13326997, 39980991, 66634985, 199904955]

約数ペア:

[(1, 199904955), (3, 66634985), (5, 39980991), (15, 13326997), (17, 11759115), (51, 3919705), (85, 2351823), (255, 783941), (317, 630615), (951, 210205), (1585, 126123), (2473, 80835), (4755, 42041), (5389, 37095), (7419, 26945), (12365, 16167)]