20363500

素因数分解:

$2^2\times 5^3\times {\mathrm{139}}^1\times {\mathrm{293}}^1$

素因数の和:451

約数の個数: 48

約数和(自身を含む): 44946720

約数和(自身を除く): 24583220

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 139, 250, 278, 293, 500, 556, 586, 695, 1172, 1390, 1465, 2780, 2930, 3475, 5860, 6950, 7325, 13900, 14650, 17375, 29300, 34750, 36625, 40727, 69500, 73250, 81454, 146500, 162908, 203635, 407270, 814540, 1018175, 2036350, 4072700, 5090875, 10181750, 20363500]

約数ペア:

[(1, 20363500), (2, 10181750), (4, 5090875), (5, 4072700), (10, 2036350), (20, 1018175), (25, 814540), (50, 407270), (100, 203635), (125, 162908), (139, 146500), (250, 81454), (278, 73250), (293, 69500), (500, 40727), (556, 36625), (586, 34750), (695, 29300), (1172, 17375), (1390, 14650), (1465, 13900), (2780, 7325), (2930, 6950), (3475, 5860)]