1991209788

素因数分解:

$2^2\times 3^2\times {\mathrm{53}}^1\times {\mathrm{647}}^1\times {\mathrm{1613}}^1$

素因数の和:2323

約数の個数: 72

約数和(自身を含む): 5139415008

約数和(自身を除く): 3148205220

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 53, 106, 159, 212, 318, 477, 636, 647, 954, 1294, 1613, 1908, 1941, 2588, 3226, 3882, 4839, 5823, 6452, 7764, 9678, 11646, 14517, 19356, 23292, 29034, 34291, 58068, 68582, 85489, 102873, 137164, 170978, 205746, 256467, 308619, 341956, 411492, 512934, 617238, 769401, 1025868, 1043611, 1234476, 1538802, 2087222, 3077604, 3130833, 4174444, 6261666, 9392499, 12523332, 18784998, 37569996, 55311383, 110622766, 165934149, 221245532, 331868298, 497802447, 663736596, 995604894, 1991209788]

約数ペア:

[(1, 1991209788), (2, 995604894), (3, 663736596), (4, 497802447), (6, 331868298), (9, 221245532), (12, 165934149), (18, 110622766), (36, 55311383), (53, 37569996), (106, 18784998), (159, 12523332), (212, 9392499), (318, 6261666), (477, 4174444), (636, 3130833), (647, 3077604), (954, 2087222), (1294, 1538802), (1613, 1234476), (1908, 1043611), (1941, 1025868), (2588, 769401), (3226, 617238), (3882, 512934), (4839, 411492), (5823, 341956), (6452, 308619), (7764, 256467), (9678, 205746), (11646, 170978), (14517, 137164), (19356, 102873), (23292, 85489), (29034, 68582), (34291, 58068)]