21917247

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{97}}^1\times {\mathrm{167}}^1$

素因数の和:319

約数の個数: 32

約数和(自身を含む): 33191424

約数和(自身を除く): 11274177

約数列:

[1, 3, 11, 33, 41, 97, 123, 167, 291, 451, 501, 1067, 1353, 1837, 3201, 3977, 5511, 6847, 11931, 16199, 20541, 43747, 48597, 75317, 131241, 178189, 225951, 534567, 664159, 1992477, 7305749, 21917247]

約数ペア:

[(1, 21917247), (3, 7305749), (11, 1992477), (33, 664159), (41, 534567), (97, 225951), (123, 178189), (167, 131241), (291, 75317), (451, 48597), (501, 43747), (1067, 20541), (1353, 16199), (1837, 11931), (3201, 6847), (3977, 5511)]