64913440

素因数分解:

$2^5\times 5^1\times {\mathrm{405709}}^1$

素因数の和:405724

約数の個数: 24

約数和(自身を含む): 153358380

約数和(自身を除く): 88444940

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 405709, 811418, 1622836, 2028545, 3245672, 4057090, 6491344, 8114180, 12982688, 16228360, 32456720, 64913440]

約数ペア:

[(1, 64913440), (2, 32456720), (4, 16228360), (5, 12982688), (8, 8114180), (10, 6491344), (16, 4057090), (20, 3245672), (32, 2028545), (40, 1622836), (80, 811418), (160, 405709)]