82778525

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{103}}^1$

素因数の和:222

約数の個数: 48

約数和(自身を含む): 115135488

約数和(自身を除く): 32356963

約数列:

[1, 5, 17, 25, 31, 61, 85, 103, 155, 305, 425, 515, 527, 775, 1037, 1525, 1751, 1891, 2575, 2635, 3193, 5185, 6283, 8755, 9455, 13175, 15965, 25925, 31415, 32147, 43775, 47275, 54281, 79825, 106811, 157075, 160735, 194773, 271405, 534055, 803675, 973865, 1357025, 2670275, 3311141, 4869325, 16555705, 82778525]

約数ペア:

[(1, 82778525), (5, 16555705), (17, 4869325), (25, 3311141), (31, 2670275), (61, 1357025), (85, 973865), (103, 803675), (155, 534055), (305, 271405), (425, 194773), (515, 160735), (527, 157075), (775, 106811), (1037, 79825), (1525, 54281), (1751, 47275), (1891, 43775), (2575, 32147), (2635, 31415), (3193, 25925), (5185, 15965), (6283, 13175), (8755, 9455)]