18978882

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{167}}^1$

素因数の和:263

約数の個数: 64

約数和(自身を含む): 43352064

約数和(自身を除く): 24373182

約数列:

[1, 2, 3, 6, 13, 26, 31, 39, 47, 62, 78, 93, 94, 141, 167, 186, 282, 334, 403, 501, 611, 806, 1002, 1209, 1222, 1457, 1833, 2171, 2418, 2914, 3666, 4342, 4371, 5177, 6513, 7849, 8742, 10354, 13026, 15531, 15698, 18941, 23547, 31062, 37882, 47094, 56823, 67301, 102037, 113646, 134602, 201903, 204074, 243319, 306111, 403806, 486638, 612222, 729957, 1459914, 3163147, 6326294, 9489441, 18978882]

約数ペア:

[(1, 18978882), (2, 9489441), (3, 6326294), (6, 3163147), (13, 1459914), (26, 729957), (31, 612222), (39, 486638), (47, 403806), (62, 306111), (78, 243319), (93, 204074), (94, 201903), (141, 134602), (167, 113646), (186, 102037), (282, 67301), (334, 56823), (403, 47094), (501, 37882), (611, 31062), (806, 23547), (1002, 18941), (1209, 15698), (1222, 15531), (1457, 13026), (1833, 10354), (2171, 8742), (2418, 7849), (2914, 6513), (3666, 5177), (4342, 4371)]