21468620

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{233}}^1\times {\mathrm{271}}^1$

素因数の和:530

約数の個数: 48

約数和(自身を含む): 48117888

約数和(自身を除く): 26649268

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 233, 271, 340, 466, 542, 932, 1084, 1165, 1355, 2330, 2710, 3961, 4607, 4660, 5420, 7922, 9214, 15844, 18428, 19805, 23035, 39610, 46070, 63143, 79220, 92140, 126286, 252572, 315715, 631430, 1073431, 1262860, 2146862, 4293724, 5367155, 10734310, 21468620]

約数ペア:

[(1, 21468620), (2, 10734310), (4, 5367155), (5, 4293724), (10, 2146862), (17, 1262860), (20, 1073431), (34, 631430), (68, 315715), (85, 252572), (170, 126286), (233, 92140), (271, 79220), (340, 63143), (466, 46070), (542, 39610), (932, 23035), (1084, 19805), (1165, 18428), (1355, 15844), (2330, 9214), (2710, 7922), (3961, 5420), (4607, 4660)]