20122180

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{193}}^1\times {\mathrm{401}}^1$

素因数の和:616

約数の個数: 48

約数和(自身を含む): 45856944

約数和(自身を除く): 25734764

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 193, 260, 386, 401, 772, 802, 965, 1604, 1930, 2005, 2509, 3860, 4010, 5018, 5213, 8020, 10036, 10426, 12545, 20852, 25090, 26065, 50180, 52130, 77393, 104260, 154786, 309572, 386965, 773930, 1006109, 1547860, 2012218, 4024436, 5030545, 10061090, 20122180]

約数ペア:

[(1, 20122180), (2, 10061090), (4, 5030545), (5, 4024436), (10, 2012218), (13, 1547860), (20, 1006109), (26, 773930), (52, 386965), (65, 309572), (130, 154786), (193, 104260), (260, 77393), (386, 52130), (401, 50180), (772, 26065), (802, 25090), (965, 20852), (1604, 12545), (1930, 10426), (2005, 10036), (2509, 8020), (3860, 5213), (4010, 5018)]