20279450

素因数分解:

$2^1\times 5^2\times {\mathrm{61}}^2\times {\mathrm{109}}^1$

素因数の和:243

約数の個数: 36

約数和(自身を含む): 38700090

約数和(自身を除く): 18420640

約数列:

[1, 2, 5, 10, 25, 50, 61, 109, 122, 218, 305, 545, 610, 1090, 1525, 2725, 3050, 3721, 5450, 6649, 7442, 13298, 18605, 33245, 37210, 66490, 93025, 166225, 186050, 332450, 405589, 811178, 2027945, 4055890, 10139725, 20279450]

約数ペア:

[(1, 20279450), (2, 10139725), (5, 4055890), (10, 2027945), (25, 811178), (50, 405589), (61, 332450), (109, 186050), (122, 166225), (218, 93025), (305, 66490), (545, 37210), (610, 33245), (1090, 18605), (1525, 13298), (2725, 7442), (3050, 6649), (3721, 5450)]