259968275

素因数分解:

$5^2\times 7^4\times {\mathrm{61}}^1\times {\mathrm{71}}^1$

素因数の和:170

約数の個数: 60

約数和(自身を含む): 387613584

約数和(自身を除く): 127645309

約数列:

[1, 5, 7, 25, 35, 49, 61, 71, 175, 245, 305, 343, 355, 427, 497, 1225, 1525, 1715, 1775, 2135, 2401, 2485, 2989, 3479, 4331, 8575, 10675, 12005, 12425, 14945, 17395, 20923, 21655, 24353, 30317, 60025, 74725, 86975, 104615, 108275, 121765, 146461, 151585, 170471, 212219, 523075, 608825, 732305, 757925, 852355, 1061095, 1485533, 3661525, 4261775, 5305475, 7427665, 10398731, 37138325, 51993655, 259968275]

約数ペア:

[(1, 259968275), (5, 51993655), (7, 37138325), (25, 10398731), (35, 7427665), (49, 5305475), (61, 4261775), (71, 3661525), (175, 1485533), (245, 1061095), (305, 852355), (343, 757925), (355, 732305), (427, 608825), (497, 523075), (1225, 212219), (1525, 170471), (1715, 151585), (1775, 146461), (2135, 121765), (2401, 108275), (2485, 104615), (2989, 86975), (3479, 74725), (4331, 60025), (8575, 30317), (10675, 24353), (12005, 21655), (12425, 20923), (14945, 17395)]