21527247

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{163}}^1\times {\mathrm{331}}^1$

素因数の和:523

約数の個数: 32

約数和(自身を含む): 34846720

約数和(自身を除く): 13319473

約数列:

[1, 3, 7, 19, 21, 57, 133, 163, 331, 399, 489, 993, 1141, 2317, 3097, 3423, 6289, 6951, 9291, 18867, 21679, 44023, 53953, 65037, 132069, 161859, 377671, 1025107, 1133013, 3075321, 7175749, 21527247]

約数ペア:

[(1, 21527247), (3, 7175749), (7, 3075321), (19, 1133013), (21, 1025107), (57, 377671), (133, 161859), (163, 132069), (331, 65037), (399, 53953), (489, 44023), (993, 21679), (1141, 18867), (2317, 9291), (3097, 6951), (3423, 6289)]