64120880

素因数分解:

$2^4\times 5^1\times {\mathrm{97}}^1\times {\mathrm{8263}}^1$

素因数の和:8373

約数の個数: 40

約数和(自身を含む): 150636192

約数和(自身を除く): 86515312

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 97, 194, 388, 485, 776, 970, 1552, 1940, 3880, 7760, 8263, 16526, 33052, 41315, 66104, 82630, 132208, 165260, 330520, 661040, 801511, 1603022, 3206044, 4007555, 6412088, 8015110, 12824176, 16030220, 32060440, 64120880]

約数ペア:

[(1, 64120880), (2, 32060440), (4, 16030220), (5, 12824176), (8, 8015110), (10, 6412088), (16, 4007555), (20, 3206044), (40, 1603022), (80, 801511), (97, 661040), (194, 330520), (388, 165260), (485, 132208), (776, 82630), (970, 66104), (1552, 41315), (1940, 33052), (3880, 16526), (7760, 8263)]