213884881

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{149}}^1\times {\mathrm{251}}^1$

素因数の和:469

約数の個数: 32

約数和(自身を含む): 266112000

約数和(自身を除く): 52227119

約数列:

[1, 7, 19, 43, 133, 149, 251, 301, 817, 1043, 1757, 2831, 4769, 5719, 6407, 10793, 19817, 33383, 37399, 44849, 75551, 121733, 205067, 261793, 710581, 852131, 1435469, 1608157, 4974067, 11257099, 30554983, 213884881]

約数ペア:

[(1, 213884881), (7, 30554983), (19, 11257099), (43, 4974067), (133, 1608157), (149, 1435469), (251, 852131), (301, 710581), (817, 261793), (1043, 205067), (1757, 121733), (2831, 75551), (4769, 44849), (5719, 37399), (6407, 33383), (10793, 19817)]