20401004

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{103}}^1\times {\mathrm{293}}^1$

素因数の和:426

約数の個数: 36

約数和(自身を含む): 39167856

約数和(自身を除く): 18766852

約数列:

[1, 2, 4, 13, 26, 52, 103, 169, 206, 293, 338, 412, 586, 676, 1172, 1339, 2678, 3809, 5356, 7618, 15236, 17407, 30179, 34814, 49517, 60358, 69628, 99034, 120716, 198068, 392327, 784654, 1569308, 5100251, 10200502, 20401004]

約数ペア:

[(1, 20401004), (2, 10200502), (4, 5100251), (13, 1569308), (26, 784654), (52, 392327), (103, 198068), (169, 120716), (206, 99034), (293, 69628), (338, 60358), (412, 49517), (586, 34814), (676, 30179), (1172, 17407), (1339, 15236), (2678, 7618), (3809, 5356)]