19986142

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{571}}^1$

素因数の和:664

約数の個数: 32

約数和(自身を含む): 34429824

約数和(自身を除く): 14443682

約数列:

[1, 2, 11, 22, 37, 43, 74, 86, 407, 473, 571, 814, 946, 1142, 1591, 3182, 6281, 12562, 17501, 21127, 24553, 35002, 42254, 49106, 232397, 270083, 464794, 540166, 908461, 1816922, 9993071, 19986142]

約数ペア:

[(1, 19986142), (2, 9993071), (11, 1816922), (22, 908461), (37, 540166), (43, 464794), (74, 270083), (86, 232397), (407, 49106), (473, 42254), (571, 35002), (814, 24553), (946, 21127), (1142, 17501), (1591, 12562), (3182, 6281)]