18978778

素因数分解:

$2^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{14897}}^1$

素因数の和:14926

約数の個数: 24

約数和(自身を含む): 35665812

約数和(自身を除く): 16687034

約数列:

[1, 2, 7, 13, 14, 26, 49, 91, 98, 182, 637, 1274, 14897, 29794, 104279, 193661, 208558, 387322, 729953, 1355627, 1459906, 2711254, 9489389, 18978778]

約数ペア:

[(1, 18978778), (2, 9489389), (7, 2711254), (13, 1459906), (14, 1355627), (26, 729953), (49, 387322), (91, 208558), (98, 193661), (182, 104279), (637, 29794), (1274, 14897)]