21931275

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{103}}^1\times {\mathrm{167}}^1$

素因数の和:300

約数の個数: 48

約数和(自身を含む): 38997504

約数和(自身を除く): 17066229

約数列:

[1, 3, 5, 15, 17, 25, 51, 75, 85, 103, 167, 255, 309, 425, 501, 515, 835, 1275, 1545, 1751, 2505, 2575, 2839, 4175, 5253, 7725, 8517, 8755, 12525, 14195, 17201, 26265, 42585, 43775, 51603, 70975, 86005, 131325, 212925, 258015, 292417, 430025, 877251, 1290075, 1462085, 4386255, 7310425, 21931275]

約数ペア:

[(1, 21931275), (3, 7310425), (5, 4386255), (15, 1462085), (17, 1290075), (25, 877251), (51, 430025), (75, 292417), (85, 258015), (103, 212925), (167, 131325), (255, 86005), (309, 70975), (425, 51603), (501, 43775), (515, 42585), (835, 26265), (1275, 17201), (1545, 14195), (1751, 12525), (2505, 8755), (2575, 8517), (2839, 7725), (4175, 5253)]