19555497

素因数分解:

$3^2\times {\mathrm{13}}^3\times {\mathrm{23}}^1\times {\mathrm{43}}^1$

素因数の和:111

約数の個数: 48

約数和(自身を含む): 32672640

約数和(自身を除く): 13117143

約数列:

[1, 3, 9, 13, 23, 39, 43, 69, 117, 129, 169, 207, 299, 387, 507, 559, 897, 989, 1521, 1677, 2197, 2691, 2967, 3887, 5031, 6591, 7267, 8901, 11661, 12857, 19773, 21801, 34983, 38571, 50531, 65403, 94471, 115713, 151593, 167141, 283413, 454779, 501423, 850239, 1504269, 2172833, 6518499, 19555497]

約数ペア:

[(1, 19555497), (3, 6518499), (9, 2172833), (13, 1504269), (23, 850239), (39, 501423), (43, 454779), (69, 283413), (117, 167141), (129, 151593), (169, 115713), (207, 94471), (299, 65403), (387, 50531), (507, 38571), (559, 34983), (897, 21801), (989, 19773), (1521, 12857), (1677, 11661), (2197, 8901), (2691, 7267), (2967, 6591), (3887, 5031)]