21745460

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{97}}^1\times {\mathrm{1019}}^1$

素因数の和:1136

約数の個数: 48

約数和(自身を含む): 50379840

約数和(自身を除く): 28634380

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 97, 110, 194, 220, 388, 485, 970, 1019, 1067, 1940, 2038, 2134, 4076, 4268, 5095, 5335, 10190, 10670, 11209, 20380, 21340, 22418, 44836, 56045, 98843, 112090, 197686, 224180, 395372, 494215, 988430, 1087273, 1976860, 2174546, 4349092, 5436365, 10872730, 21745460]

約数ペア:

[(1, 21745460), (2, 10872730), (4, 5436365), (5, 4349092), (10, 2174546), (11, 1976860), (20, 1087273), (22, 988430), (44, 494215), (55, 395372), (97, 224180), (110, 197686), (194, 112090), (220, 98843), (388, 56045), (485, 44836), (970, 22418), (1019, 21340), (1067, 20380), (1940, 11209), (2038, 10670), (2134, 10190), (4076, 5335), (4268, 5095)]