31486975

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{139}}^1$

素因数の和:220

約数の個数: 48

約数和(自身を含む): 45934560

約数和(自身を除く): 14447585

約数列:

[1, 5, 13, 17, 25, 41, 65, 85, 139, 205, 221, 325, 425, 533, 695, 697, 1025, 1105, 1807, 2363, 2665, 3475, 3485, 5525, 5699, 9035, 9061, 11815, 13325, 17425, 28495, 30719, 45175, 45305, 59075, 74087, 96883, 142475, 153595, 226525, 370435, 484415, 767975, 1259479, 1852175, 2422075, 6297395, 31486975]

約数ペア:

[(1, 31486975), (5, 6297395), (13, 2422075), (17, 1852175), (25, 1259479), (41, 767975), (65, 484415), (85, 370435), (139, 226525), (205, 153595), (221, 142475), (325, 96883), (425, 74087), (533, 59075), (695, 45305), (697, 45175), (1025, 30719), (1105, 28495), (1807, 17425), (2363, 13325), (2665, 11815), (3475, 9061), (3485, 9035), (5525, 5699)]