80627900

素因数分解:

$2^2\times 5^2\times {\mathrm{31}}^2\times {\mathrm{839}}^1$

素因数の和:915

約数の個数: 54

約数和(自身を含む): 181004040

約数和(自身を除く): 100376140

約数列:

[1, 2, 4, 5, 10, 20, 25, 31, 50, 62, 100, 124, 155, 310, 620, 775, 839, 961, 1550, 1678, 1922, 3100, 3356, 3844, 4195, 4805, 8390, 9610, 16780, 19220, 20975, 24025, 26009, 41950, 48050, 52018, 83900, 96100, 104036, 130045, 260090, 520180, 650225, 806279, 1300450, 1612558, 2600900, 3225116, 4031395, 8062790, 16125580, 20156975, 40313950, 80627900]

約数ペア:

[(1, 80627900), (2, 40313950), (4, 20156975), (5, 16125580), (10, 8062790), (20, 4031395), (25, 3225116), (31, 2600900), (50, 1612558), (62, 1300450), (100, 806279), (124, 650225), (155, 520180), (310, 260090), (620, 130045), (775, 104036), (839, 96100), (961, 83900), (1550, 52018), (1678, 48050), (1922, 41950), (3100, 26009), (3356, 24025), (3844, 20975), (4195, 19220), (4805, 16780), (8390, 9610)]