217874540

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{837979}}^1$

素因数の和:838001

約数の個数: 24

約数和(自身を含む): 492732240

約数和(自身を除く): 274857700

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 837979, 1675958, 3351916, 4189895, 8379790, 10893727, 16759580, 21787454, 43574908, 54468635, 108937270, 217874540]

約数ペア:

[(1, 217874540), (2, 108937270), (4, 54468635), (5, 43574908), (10, 21787454), (13, 16759580), (20, 10893727), (26, 8379790), (52, 4189895), (65, 3351916), (130, 1675958), (260, 837979)]