20039985

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{113}}^1\times {\mathrm{563}}^1$

素因数の和:694

約数の個数: 48

約数和(自身を含む): 40120704

約数和(自身を除く): 20080719

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 113, 315, 339, 563, 565, 791, 1017, 1689, 1695, 2373, 2815, 3941, 3955, 5067, 5085, 7119, 8445, 11823, 11865, 19705, 25335, 35469, 35595, 59115, 63619, 177345, 190857, 318095, 445333, 572571, 954285, 1335999, 2226665, 2862855, 4007997, 6679995, 20039985]

約数ペア:

[(1, 20039985), (3, 6679995), (5, 4007997), (7, 2862855), (9, 2226665), (15, 1335999), (21, 954285), (35, 572571), (45, 445333), (63, 318095), (105, 190857), (113, 177345), (315, 63619), (339, 59115), (563, 35595), (565, 35469), (791, 25335), (1017, 19705), (1689, 11865), (1695, 11823), (2373, 8445), (2815, 7119), (3941, 5085), (3955, 5067)]