2565455440

素因数分解:

$2^4\times 5^1\times {\mathrm{1987}}^1\times {\mathrm{16139}}^1$

素因数の和:18139

約数の個数: 40

約数和(自身を含む): 5968055520

約数和(自身を除く): 3402600080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1987, 3974, 7948, 9935, 15896, 16139, 19870, 31792, 32278, 39740, 64556, 79480, 80695, 129112, 158960, 161390, 258224, 322780, 645560, 1291120, 32068193, 64136386, 128272772, 160340965, 256545544, 320681930, 513091088, 641363860, 1282727720, 2565455440]

約数ペア:

[(1, 2565455440), (2, 1282727720), (4, 641363860), (5, 513091088), (8, 320681930), (10, 256545544), (16, 160340965), (20, 128272772), (40, 64136386), (80, 32068193), (1987, 1291120), (3974, 645560), (7948, 322780), (9935, 258224), (15896, 161390), (16139, 158960), (19870, 129112), (31792, 80695), (32278, 79480), (39740, 64556)]