21801675

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{131}}^1\times {\mathrm{317}}^1$

素因数の和:468

約数の個数: 48

約数和(自身を含む): 41640192

約数和(自身を除く): 19838517

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 75, 105, 131, 175, 317, 393, 525, 655, 917, 951, 1585, 1965, 2219, 2751, 3275, 4585, 4755, 6657, 7925, 9825, 11095, 13755, 22925, 23775, 33285, 41527, 55475, 68775, 124581, 166425, 207635, 290689, 622905, 872067, 1038175, 1453445, 3114525, 4360335, 7267225, 21801675]

約数ペア:

[(1, 21801675), (3, 7267225), (5, 4360335), (7, 3114525), (15, 1453445), (21, 1038175), (25, 872067), (35, 622905), (75, 290689), (105, 207635), (131, 166425), (175, 124581), (317, 68775), (393, 55475), (525, 41527), (655, 33285), (917, 23775), (951, 22925), (1585, 13755), (1965, 11095), (2219, 9825), (2751, 7925), (3275, 6657), (4585, 4755)]