78857480

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{1091}}^1$

素因数の和:1254

約数の個数: 64

約数和(自身を含む): 192628800

約数和(自身を除く): 113771320

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 139, 260, 278, 520, 556, 695, 1091, 1112, 1390, 1807, 2182, 2780, 3614, 4364, 5455, 5560, 7228, 8728, 9035, 10910, 14183, 14456, 18070, 21820, 28366, 36140, 43640, 56732, 70915, 72280, 113464, 141830, 151649, 283660, 303298, 567320, 606596, 758245, 1213192, 1516490, 1971437, 3032980, 3942874, 6065960, 7885748, 9857185, 15771496, 19714370, 39428740, 78857480]

約数ペア:

[(1, 78857480), (2, 39428740), (4, 19714370), (5, 15771496), (8, 9857185), (10, 7885748), (13, 6065960), (20, 3942874), (26, 3032980), (40, 1971437), (52, 1516490), (65, 1213192), (104, 758245), (130, 606596), (139, 567320), (260, 303298), (278, 283660), (520, 151649), (556, 141830), (695, 113464), (1091, 72280), (1112, 70915), (1390, 56732), (1807, 43640), (2182, 36140), (2780, 28366), (3614, 21820), (4364, 18070), (5455, 14456), (5560, 14183), (7228, 10910), (8728, 9035)]