21962019

素因数分解:

$3^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{131}}^1$

素因数の和:251

約数の個数: 32

約数和(自身を含む): 31933440

約数和(自身を除く): 9971421

約数列:

[1, 3, 29, 41, 47, 87, 123, 131, 141, 393, 1189, 1363, 1927, 3567, 3799, 4089, 5371, 5781, 6157, 11397, 16113, 18471, 55883, 155759, 167649, 178553, 252437, 467277, 535659, 757311, 7320673, 21962019]

約数ペア:

[(1, 21962019), (3, 7320673), (29, 757311), (41, 535659), (47, 467277), (87, 252437), (123, 178553), (131, 167649), (141, 155759), (393, 55883), (1189, 18471), (1363, 16113), (1927, 11397), (3567, 6157), (3799, 5781), (4089, 5371)]