21000314881

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{353}}^1\times {\mathrm{22543}}^1$

素因数の和:22945

約数の個数: 32

約数和(自身を含む): 26814735360

約数和(自身を除く): 5814420479

約数列:

[1, 7, 13, 29, 91, 203, 353, 377, 2471, 2639, 4589, 10237, 22543, 32123, 71659, 133081, 157801, 293059, 653747, 931567, 2051413, 4576229, 7957679, 8498711, 55703753, 59490977, 103449827, 230772691, 724148789, 1615408837, 3000044983, 21000314881]

約数ペア:

[(1, 21000314881), (7, 3000044983), (13, 1615408837), (29, 724148789), (91, 230772691), (203, 103449827), (353, 59490977), (377, 55703753), (2471, 8498711), (2639, 7957679), (4589, 4576229), (10237, 2051413), (22543, 931567), (32123, 653747), (71659, 293059), (133081, 157801)]