870834740

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{89}}^2\times {\mathrm{239}}^1$

素因数の和:449

約数の個数: 72

約数和(自身を含む): 1938021120

約数和(自身を除く): 1067186380

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 89, 92, 115, 178, 230, 239, 356, 445, 460, 478, 890, 956, 1195, 1780, 2047, 2390, 4094, 4780, 5497, 7921, 8188, 10235, 10994, 15842, 20470, 21271, 21988, 27485, 31684, 39605, 40940, 42542, 54970, 79210, 85084, 106355, 109940, 158420, 182183, 212710, 364366, 425420, 489233, 728732, 910915, 978466, 1821830, 1893119, 1956932, 2446165, 3643660, 3786238, 4892330, 7572476, 9465595, 9784660, 18931190, 37862380, 43541737, 87083474, 174166948, 217708685, 435417370, 870834740]

約数ペア:

[(1, 870834740), (2, 435417370), (4, 217708685), (5, 174166948), (10, 87083474), (20, 43541737), (23, 37862380), (46, 18931190), (89, 9784660), (92, 9465595), (115, 7572476), (178, 4892330), (230, 3786238), (239, 3643660), (356, 2446165), (445, 1956932), (460, 1893119), (478, 1821830), (890, 978466), (956, 910915), (1195, 728732), (1780, 489233), (2047, 425420), (2390, 364366), (4094, 212710), (4780, 182183), (5497, 158420), (7921, 109940), (8188, 106355), (10235, 85084), (10994, 79210), (15842, 54970), (20470, 42542), (21271, 40940), (21988, 39605), (27485, 31684)]