80025140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{347}}^1\times {\mathrm{887}}^1$

素因数の和:1256

約数の個数: 48

約数和(自身を含む): 181706112

約数和(自身を除く): 101680972

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 347, 694, 887, 1388, 1735, 1774, 3470, 3548, 4435, 4511, 6940, 8870, 9022, 11531, 17740, 18044, 22555, 23062, 45110, 46124, 57655, 90220, 115310, 230620, 307789, 615578, 1231156, 1538945, 3077890, 4001257, 6155780, 8002514, 16005028, 20006285, 40012570, 80025140]

約数ペア:

[(1, 80025140), (2, 40012570), (4, 20006285), (5, 16005028), (10, 8002514), (13, 6155780), (20, 4001257), (26, 3077890), (52, 1538945), (65, 1231156), (130, 615578), (260, 307789), (347, 230620), (694, 115310), (887, 90220), (1388, 57655), (1735, 46124), (1774, 45110), (3470, 23062), (3548, 22555), (4435, 18044), (4511, 17740), (6940, 11531), (8870, 9022)]