639631202

素因数分解:

$2^1\times 7^4\times {\mathrm{133201}}^1$

素因数の和:133231

約数の個数: 20

約数和(自身を含む): 1119296406

約数和(自身を除く): 479665204

約数列:

[1, 2, 7, 14, 49, 98, 343, 686, 2401, 4802, 133201, 266402, 932407, 1864814, 6526849, 13053698, 45687943, 91375886, 319815601, 639631202]

約数ペア:

[(1, 639631202), (2, 319815601), (7, 91375886), (14, 45687943), (49, 13053698), (98, 6526849), (343, 1864814), (686, 932407), (2401, 266402), (4802, 133201)]