81678207

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{139}}^1$

素因数の和:248

約数の個数: 48

約数和(自身を含む): 127075200

約数和(自身を除く): 45396993

約数列:

[1, 3, 13, 19, 39, 57, 61, 139, 169, 183, 247, 417, 507, 741, 793, 1159, 1807, 2379, 2641, 3211, 3477, 5421, 7923, 8479, 9633, 10309, 15067, 23491, 25437, 30927, 34333, 45201, 70473, 102999, 110227, 161101, 195871, 330681, 446329, 483303, 587613, 1338987, 1432951, 2094313, 4298853, 6282939, 27226069, 81678207]

約数ペア:

[(1, 81678207), (3, 27226069), (13, 6282939), (19, 4298853), (39, 2094313), (57, 1432951), (61, 1338987), (139, 587613), (169, 483303), (183, 446329), (247, 330681), (417, 195871), (507, 161101), (741, 110227), (793, 102999), (1159, 70473), (1807, 45201), (2379, 34333), (2641, 30927), (3211, 25437), (3477, 23491), (5421, 15067), (7923, 10309), (8479, 9633)]