78920140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{303539}}^1$

素因数の和:303561

約数の個数: 24

約数和(自身を含む): 178481520

約数和(自身を除く): 99561380

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 303539, 607078, 1214156, 1517695, 3035390, 3946007, 6070780, 7892014, 15784028, 19730035, 39460070, 78920140]

約数ペア:

[(1, 78920140), (2, 39460070), (4, 19730035), (5, 15784028), (10, 7892014), (13, 6070780), (20, 3946007), (26, 3035390), (52, 1517695), (65, 1214156), (130, 607078), (260, 303539)]