20983011

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{1223}}^1$

素因数の和:1295

約数の個数: 32

約数和(自身を含む): 34467840

約数和(自身を除く): 13484829

約数列:

[1, 3, 7, 19, 21, 43, 57, 129, 133, 301, 399, 817, 903, 1223, 2451, 3669, 5719, 8561, 17157, 23237, 25683, 52589, 69711, 157767, 162659, 368123, 487977, 999191, 1104369, 2997573, 6994337, 20983011]

約数ペア:

[(1, 20983011), (3, 6994337), (7, 2997573), (19, 1104369), (21, 999191), (43, 487977), (57, 368123), (129, 162659), (133, 157767), (301, 69711), (399, 52589), (817, 25683), (903, 23237), (1223, 17157), (2451, 8561), (3669, 5719)]