64892840

素因数分解:

$2^3\times 5^1\times {\mathrm{359}}^1\times {\mathrm{4519}}^1$

素因数の和:4889

約数の個数: 32

約数和(自身を含む): 146448000

約数和(自身を除く): 81555160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 359, 718, 1436, 1795, 2872, 3590, 4519, 7180, 9038, 14360, 18076, 22595, 36152, 45190, 90380, 180760, 1622321, 3244642, 6489284, 8111605, 12978568, 16223210, 32446420, 64892840]

約数ペア:

[(1, 64892840), (2, 32446420), (4, 16223210), (5, 12978568), (8, 8111605), (10, 6489284), (20, 3244642), (40, 1622321), (359, 180760), (718, 90380), (1436, 45190), (1795, 36152), (2872, 22595), (3590, 18076), (4519, 14360), (7180, 9038)]