218801121

素因数分解:

$3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{2879}}^1$

素因数の和:2954

約数の個数: 48

約数和(自身を含む): 378224640

約数和(自身を除く): 159423519

約数列:

[1, 3, 7, 11, 21, 33, 47, 49, 77, 141, 147, 231, 329, 517, 539, 987, 1551, 1617, 2303, 2879, 3619, 6909, 8637, 10857, 20153, 25333, 31669, 60459, 75999, 95007, 135313, 141071, 221683, 405939, 423213, 665049, 947191, 1488443, 1551781, 2841573, 4465329, 4655343, 6630337, 10419101, 19891011, 31257303, 72933707, 218801121]

約数ペア:

[(1, 218801121), (3, 72933707), (7, 31257303), (11, 19891011), (21, 10419101), (33, 6630337), (47, 4655343), (49, 4465329), (77, 2841573), (141, 1551781), (147, 1488443), (231, 947191), (329, 665049), (517, 423213), (539, 405939), (987, 221683), (1551, 141071), (1617, 135313), (2303, 95007), (2879, 75999), (3619, 60459), (6909, 31669), (8637, 25333), (10857, 20153)]