213621807

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{12451}}^1$

素因数の和:12523

約数の個数: 32

約数和(自身を含む): 350648320

約数和(自身を除く): 137026513

約数列:

[1, 3, 7, 19, 21, 43, 57, 129, 133, 301, 399, 817, 903, 2451, 5719, 12451, 17157, 37353, 87157, 236569, 261471, 535393, 709707, 1606179, 1655983, 3747751, 4967949, 10172467, 11243253, 30517401, 71207269, 213621807]

約数ペア:

[(1, 213621807), (3, 71207269), (7, 30517401), (19, 11243253), (21, 10172467), (43, 4967949), (57, 3747751), (129, 1655983), (133, 1606179), (301, 709707), (399, 535393), (817, 261471), (903, 236569), (2451, 87157), (5719, 37353), (12451, 17157)]