21499275

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{1321}}^1$

素因数の和:1372

約数の個数: 48

約数和(自身を含む): 41965568

約数和(自身を除く): 20466293

約数列:

[1, 3, 5, 7, 15, 21, 25, 31, 35, 75, 93, 105, 155, 175, 217, 465, 525, 651, 775, 1085, 1321, 2325, 3255, 3963, 5425, 6605, 9247, 16275, 19815, 27741, 33025, 40951, 46235, 99075, 122853, 138705, 204755, 231175, 286657, 614265, 693525, 859971, 1023775, 1433285, 3071325, 4299855, 7166425, 21499275]

約数ペア:

[(1, 21499275), (3, 7166425), (5, 4299855), (7, 3071325), (15, 1433285), (21, 1023775), (25, 859971), (31, 693525), (35, 614265), (75, 286657), (93, 231175), (105, 204755), (155, 138705), (175, 122853), (217, 99075), (465, 46235), (525, 40951), (651, 33025), (775, 27741), (1085, 19815), (1321, 16275), (2325, 9247), (3255, 6605), (3963, 5425)]