18213723

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{421}}^1$

素因数の和:480

約数の個数: 48

約数和(自身を含む): 31599360

約数和(自身を除く): 13385637

約数列:

[1, 3, 9, 11, 19, 23, 33, 57, 69, 99, 171, 207, 209, 253, 421, 437, 627, 759, 1263, 1311, 1881, 2277, 3789, 3933, 4631, 4807, 7999, 9683, 13893, 14421, 23997, 29049, 41679, 43263, 71991, 87147, 87989, 106513, 183977, 263967, 319539, 551931, 791901, 958617, 1655793, 2023747, 6071241, 18213723]

約数ペア:

[(1, 18213723), (3, 6071241), (9, 2023747), (11, 1655793), (19, 958617), (23, 791901), (33, 551931), (57, 319539), (69, 263967), (99, 183977), (171, 106513), (207, 87989), (209, 87147), (253, 71991), (421, 43263), (437, 41679), (627, 29049), (759, 23997), (1263, 14421), (1311, 13893), (1881, 9683), (2277, 7999), (3789, 4807), (3933, 4631)]