278045229

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{59}}^1\times {\mathrm{887}}^1$

素因数の和:990

約数の個数: 64

約数和(自身を含む): 491028480

約数和(自身を除く): 212983251

約数列:

[1, 3, 7, 11, 21, 23, 33, 59, 69, 77, 161, 177, 231, 253, 413, 483, 649, 759, 887, 1239, 1357, 1771, 1947, 2661, 4071, 4543, 5313, 6209, 9499, 9757, 13629, 14927, 18627, 20401, 28497, 29271, 44781, 52333, 61203, 68299, 104489, 142807, 156999, 204897, 224411, 313467, 366331, 428421, 575663, 673233, 1098993, 1203659, 1570877, 1726989, 3610977, 4029641, 4712631, 8425613, 12088923, 13240249, 25276839, 39720747, 92681743, 278045229]

約数ペア:

[(1, 278045229), (3, 92681743), (7, 39720747), (11, 25276839), (21, 13240249), (23, 12088923), (33, 8425613), (59, 4712631), (69, 4029641), (77, 3610977), (161, 1726989), (177, 1570877), (231, 1203659), (253, 1098993), (413, 673233), (483, 575663), (649, 428421), (759, 366331), (887, 313467), (1239, 224411), (1357, 204897), (1771, 156999), (1947, 142807), (2661, 104489), (4071, 68299), (4543, 61203), (5313, 52333), (6209, 44781), (9499, 29271), (9757, 28497), (13629, 20401), (14927, 18627)]