18218886

素因数分解:

$2^1\times 3^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{1999}}^1$

素因数の和:2049

約数の個数: 48

約数和(自身を含む): 43776000

約数和(自身を除く): 25557114

約数列:

[1, 2, 3, 6, 7, 14, 21, 31, 42, 49, 62, 93, 98, 147, 186, 217, 294, 434, 651, 1302, 1519, 1999, 3038, 3998, 4557, 5997, 9114, 11994, 13993, 27986, 41979, 61969, 83958, 97951, 123938, 185907, 195902, 293853, 371814, 433783, 587706, 867566, 1301349, 2602698, 3036481, 6072962, 9109443, 18218886]

約数ペア:

[(1, 18218886), (2, 9109443), (3, 6072962), (6, 3036481), (7, 2602698), (14, 1301349), (21, 867566), (31, 587706), (42, 433783), (49, 371814), (62, 293853), (93, 195902), (98, 185907), (147, 123938), (186, 97951), (217, 83958), (294, 61969), (434, 41979), (651, 27986), (1302, 13993), (1519, 11994), (1999, 9114), (3038, 5997), (3998, 4557)]