78416740

素因数分解:

$2^2\times 5^1\times {\mathrm{83}}^1\times {\mathrm{97}}^1\times {\mathrm{487}}^1$

素因数の和:676

約数の個数: 48

約数和(自身を含む): 168723072

約数和(自身を除く): 90306332

約数列:

[1, 2, 4, 5, 10, 20, 83, 97, 166, 194, 332, 388, 415, 485, 487, 830, 970, 974, 1660, 1940, 1948, 2435, 4870, 8051, 9740, 16102, 32204, 40255, 40421, 47239, 80510, 80842, 94478, 161020, 161684, 188956, 202105, 236195, 404210, 472390, 808420, 944780, 3920837, 7841674, 15683348, 19604185, 39208370, 78416740]

約数ペア:

[(1, 78416740), (2, 39208370), (4, 19604185), (5, 15683348), (10, 7841674), (20, 3920837), (83, 944780), (97, 808420), (166, 472390), (194, 404210), (332, 236195), (388, 202105), (415, 188956), (485, 161684), (487, 161020), (830, 94478), (970, 80842), (974, 80510), (1660, 47239), (1940, 40421), (1948, 40255), (2435, 32204), (4870, 16102), (8051, 9740)]