55219720

素因数分解:

$2^3\times 5^1\times {\mathrm{431}}^1\times {\mathrm{3203}}^1$

素因数の和:3645

約数の個数: 32

約数和(自身を含む): 124571520

約数和(自身を除く): 69351800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 431, 862, 1724, 2155, 3203, 3448, 4310, 6406, 8620, 12812, 16015, 17240, 25624, 32030, 64060, 128120, 1380493, 2760986, 5521972, 6902465, 11043944, 13804930, 27609860, 55219720]

約数ペア:

[(1, 55219720), (2, 27609860), (4, 13804930), (5, 11043944), (8, 6902465), (10, 5521972), (20, 2760986), (40, 1380493), (431, 128120), (862, 64060), (1724, 32030), (2155, 25624), (3203, 17240), (3448, 16015), (4310, 12812), (6406, 8620)]