18985280

素因数分解:

$2^6\times 5^1\times {\mathrm{79}}^1\times {\mathrm{751}}^1$

素因数の和:847

約数の個数: 56

約数和(自身を含む): 45841920

約数和(自身を除く): 26856640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 79, 80, 158, 160, 316, 320, 395, 632, 751, 790, 1264, 1502, 1580, 2528, 3004, 3160, 3755, 5056, 6008, 6320, 7510, 12016, 12640, 15020, 24032, 25280, 30040, 48064, 59329, 60080, 118658, 120160, 237316, 240320, 296645, 474632, 593290, 949264, 1186580, 1898528, 2373160, 3797056, 4746320, 9492640, 18985280]

約数ペア:

[(1, 18985280), (2, 9492640), (4, 4746320), (5, 3797056), (8, 2373160), (10, 1898528), (16, 1186580), (20, 949264), (32, 593290), (40, 474632), (64, 296645), (79, 240320), (80, 237316), (158, 120160), (160, 118658), (316, 60080), (320, 59329), (395, 48064), (632, 30040), (751, 25280), (790, 24032), (1264, 15020), (1502, 12640), (1580, 12016), (2528, 7510), (3004, 6320), (3160, 6008), (3755, 5056)]