28091420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{163}}^1\times {\mathrm{1231}}^1$

素因数の和:1410

約数の個数: 48

約数和(自身を含む): 67888128

約数和(自身を除く): 39796708

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 163, 326, 652, 815, 1141, 1231, 1630, 2282, 2462, 3260, 4564, 4924, 5705, 6155, 8617, 11410, 12310, 17234, 22820, 24620, 34468, 43085, 86170, 172340, 200653, 401306, 802612, 1003265, 1404571, 2006530, 2809142, 4013060, 5618284, 7022855, 14045710, 28091420]

約数ペア:

[(1, 28091420), (2, 14045710), (4, 7022855), (5, 5618284), (7, 4013060), (10, 2809142), (14, 2006530), (20, 1404571), (28, 1003265), (35, 802612), (70, 401306), (140, 200653), (163, 172340), (326, 86170), (652, 43085), (815, 34468), (1141, 24620), (1231, 22820), (1630, 17234), (2282, 12310), (2462, 11410), (3260, 8617), (4564, 6155), (4924, 5705)]