21131850

素因数分解:

$2^1\times 3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{8287}}^1$

素因数の和:8319

約数の個数: 48

約数和(自身を含む): 55496448

約数和(自身を除く): 34364598

約数列:

[1, 2, 3, 5, 6, 10, 15, 17, 25, 30, 34, 50, 51, 75, 85, 102, 150, 170, 255, 425, 510, 850, 1275, 2550, 8287, 16574, 24861, 41435, 49722, 82870, 124305, 140879, 207175, 248610, 281758, 414350, 422637, 621525, 704395, 845274, 1243050, 1408790, 2113185, 3521975, 4226370, 7043950, 10565925, 21131850]

約数ペア:

[(1, 21131850), (2, 10565925), (3, 7043950), (5, 4226370), (6, 3521975), (10, 2113185), (15, 1408790), (17, 1243050), (25, 845274), (30, 704395), (34, 621525), (50, 422637), (51, 414350), (75, 281758), (85, 248610), (102, 207175), (150, 140879), (170, 124305), (255, 82870), (425, 49722), (510, 41435), (850, 24861), (1275, 16574), (2550, 8287)]