1989678580

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{257}}^1\times {\mathrm{12487}}^1$

素因数の和:12784

約数の個数: 48

約数和(自身を含む): 4330238976

約数和(自身を除く): 2340560396

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 257, 310, 514, 620, 1028, 1285, 2570, 5140, 7967, 12487, 15934, 24974, 31868, 39835, 49948, 62435, 79670, 124870, 159340, 249740, 387097, 774194, 1548388, 1935485, 3209159, 3870970, 6418318, 7741940, 12836636, 16045795, 32091590, 64183180, 99483929, 198967858, 397935716, 497419645, 994839290, 1989678580]

約数ペア:

[(1, 1989678580), (2, 994839290), (4, 497419645), (5, 397935716), (10, 198967858), (20, 99483929), (31, 64183180), (62, 32091590), (124, 16045795), (155, 12836636), (257, 7741940), (310, 6418318), (514, 3870970), (620, 3209159), (1028, 1935485), (1285, 1548388), (2570, 774194), (5140, 387097), (7967, 249740), (12487, 159340), (15934, 124870), (24974, 79670), (31868, 62435), (39835, 49948)]