20204144

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{1621}}^1$

素因数の和:1689

約数の個数: 40

約数和(自身を含む): 42236880

約数和(自身を除く): 22032736

約数列:

[1, 2, 4, 8, 16, 19, 38, 41, 76, 82, 152, 164, 304, 328, 656, 779, 1558, 1621, 3116, 3242, 6232, 6484, 12464, 12968, 25936, 30799, 61598, 66461, 123196, 132922, 246392, 265844, 492784, 531688, 1063376, 1262759, 2525518, 5051036, 10102072, 20204144]

約数ペア:

[(1, 20204144), (2, 10102072), (4, 5051036), (8, 2525518), (16, 1262759), (19, 1063376), (38, 531688), (41, 492784), (76, 265844), (82, 246392), (152, 132922), (164, 123196), (304, 66461), (328, 61598), (656, 30799), (779, 25936), (1558, 12968), (1621, 12464), (3116, 6484), (3242, 6232)]