19940660

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{223}}^1\times {\mathrm{263}}^1$

素因数の和:512

約数の個数: 48

約数和(自身を含む): 44706816

約数和(自身を除く): 24766156

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 223, 263, 340, 446, 526, 892, 1052, 1115, 1315, 2230, 2630, 3791, 4460, 4471, 5260, 7582, 8942, 15164, 17884, 18955, 22355, 37910, 44710, 58649, 75820, 89420, 117298, 234596, 293245, 586490, 997033, 1172980, 1994066, 3988132, 4985165, 9970330, 19940660]

約数ペア:

[(1, 19940660), (2, 9970330), (4, 4985165), (5, 3988132), (10, 1994066), (17, 1172980), (20, 997033), (34, 586490), (68, 293245), (85, 234596), (170, 117298), (223, 89420), (263, 75820), (340, 58649), (446, 44710), (526, 37910), (892, 22355), (1052, 18955), (1115, 17884), (1315, 15164), (2230, 8942), (2630, 7582), (3791, 5260), (4460, 4471)]