81801080

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{2909}}^1$

素因数の和:2976

約数の個数: 64

約数和(自身を含む): 199044000

約数和(自身を除く): 117242920

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 37, 38, 40, 74, 76, 95, 148, 152, 185, 190, 296, 370, 380, 703, 740, 760, 1406, 1480, 2812, 2909, 3515, 5624, 5818, 7030, 11636, 14060, 14545, 23272, 28120, 29090, 55271, 58180, 107633, 110542, 116360, 215266, 221084, 276355, 430532, 442168, 538165, 552710, 861064, 1076330, 1105420, 2045027, 2152660, 2210840, 4090054, 4305320, 8180108, 10225135, 16360216, 20450270, 40900540, 81801080]

約数ペア:

[(1, 81801080), (2, 40900540), (4, 20450270), (5, 16360216), (8, 10225135), (10, 8180108), (19, 4305320), (20, 4090054), (37, 2210840), (38, 2152660), (40, 2045027), (74, 1105420), (76, 1076330), (95, 861064), (148, 552710), (152, 538165), (185, 442168), (190, 430532), (296, 276355), (370, 221084), (380, 215266), (703, 116360), (740, 110542), (760, 107633), (1406, 58180), (1480, 55271), (2812, 29090), (2909, 28120), (3515, 23272), (5624, 14545), (5818, 14060), (7030, 11636)]