81290580

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{193549}}^1$

素因数の和:193568

約数の個数: 48

約数和(自身を含む): 260131200

約数和(自身を除く): 178840620

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 193549, 387098, 580647, 774196, 967745, 1161294, 1354843, 1935490, 2322588, 2709686, 2903235, 3870980, 4064529, 5419372, 5806470, 6774215, 8129058, 11612940, 13548430, 16258116, 20322645, 27096860, 40645290, 81290580]

約数ペア:

[(1, 81290580), (2, 40645290), (3, 27096860), (4, 20322645), (5, 16258116), (6, 13548430), (7, 11612940), (10, 8129058), (12, 6774215), (14, 5806470), (15, 5419372), (20, 4064529), (21, 3870980), (28, 2903235), (30, 2709686), (35, 2322588), (42, 1935490), (60, 1354843), (70, 1161294), (84, 967745), (105, 774196), (140, 580647), (210, 387098), (420, 193549)]