81859540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{15803}}^1$

素因数の和:15856

約数の個数: 48

約数和(自身を含む): 201785472

約数和(自身を除く): 119925932

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 37, 70, 74, 140, 148, 185, 259, 370, 518, 740, 1036, 1295, 2590, 5180, 15803, 31606, 63212, 79015, 110621, 158030, 221242, 316060, 442484, 553105, 584711, 1106210, 1169422, 2212420, 2338844, 2923555, 4092977, 5847110, 8185954, 11694220, 16371908, 20464885, 40929770, 81859540]

約数ペア:

[(1, 81859540), (2, 40929770), (4, 20464885), (5, 16371908), (7, 11694220), (10, 8185954), (14, 5847110), (20, 4092977), (28, 2923555), (35, 2338844), (37, 2212420), (70, 1169422), (74, 1106210), (140, 584711), (148, 553105), (185, 442484), (259, 316060), (370, 221242), (518, 158030), (740, 110621), (1036, 79015), (1295, 63212), (2590, 31606), (5180, 15803)]