12028820

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{197}}^1$

素因数の和:320

約数の個数: 48

約数和(自身を含む): 26345088

約数和(自身を除く): 14316268

約数列:

[1, 2, 4, 5, 10, 20, 43, 71, 86, 142, 172, 197, 215, 284, 355, 394, 430, 710, 788, 860, 985, 1420, 1970, 3053, 3940, 6106, 8471, 12212, 13987, 15265, 16942, 27974, 30530, 33884, 42355, 55948, 61060, 69935, 84710, 139870, 169420, 279740, 601441, 1202882, 2405764, 3007205, 6014410, 12028820]

約数ペア:

[(1, 12028820), (2, 6014410), (4, 3007205), (5, 2405764), (10, 1202882), (20, 601441), (43, 279740), (71, 169420), (86, 139870), (142, 84710), (172, 69935), (197, 61060), (215, 55948), (284, 42355), (355, 33884), (394, 30530), (430, 27974), (710, 16942), (788, 15265), (860, 13987), (985, 12212), (1420, 8471), (1970, 6106), (3053, 3940)]