18985400

素因数分解:

$2^3\times 5^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{191}}^1$

素因数の和:285

約数の個数: 96

約数和(自身を含む): 51425280

約数和(自身を除く): 32439880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 25, 28, 35, 40, 50, 56, 70, 71, 100, 140, 142, 175, 191, 200, 280, 284, 350, 355, 382, 497, 568, 700, 710, 764, 955, 994, 1337, 1400, 1420, 1528, 1775, 1910, 1988, 2485, 2674, 2840, 3550, 3820, 3976, 4775, 4970, 5348, 6685, 7100, 7640, 9550, 9940, 10696, 12425, 13370, 13561, 14200, 19100, 19880, 24850, 26740, 27122, 33425, 38200, 49700, 53480, 54244, 66850, 67805, 94927, 99400, 108488, 133700, 135610, 189854, 267400, 271220, 339025, 379708, 474635, 542440, 678050, 759416, 949270, 1356100, 1898540, 2373175, 2712200, 3797080, 4746350, 9492700, 18985400]

約数ペア:

[(1, 18985400), (2, 9492700), (4, 4746350), (5, 3797080), (7, 2712200), (8, 2373175), (10, 1898540), (14, 1356100), (20, 949270), (25, 759416), (28, 678050), (35, 542440), (40, 474635), (50, 379708), (56, 339025), (70, 271220), (71, 267400), (100, 189854), (140, 135610), (142, 133700), (175, 108488), (191, 99400), (200, 94927), (280, 67805), (284, 66850), (350, 54244), (355, 53480), (382, 49700), (497, 38200), (568, 33425), (700, 27122), (710, 26740), (764, 24850), (955, 19880), (994, 19100), (1337, 14200), (1400, 13561), (1420, 13370), (1528, 12425), (1775, 10696), (1910, 9940), (1988, 9550), (2485, 7640), (2674, 7100), (2840, 6685), (3550, 5348), (3820, 4970), (3976, 4775)]