256203800

素因数分解:

$2^3\times 5^2\times {\mathrm{491}}^1\times {\mathrm{2609}}^1$

素因数の和:3116

約数の個数: 48

約数和(自身を含む): 597115800

約数和(自身を除く): 340912000

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 491, 982, 1964, 2455, 2609, 3928, 4910, 5218, 9820, 10436, 12275, 13045, 19640, 20872, 24550, 26090, 49100, 52180, 65225, 98200, 104360, 130450, 260900, 521800, 1281019, 2562038, 5124076, 6405095, 10248152, 12810190, 25620380, 32025475, 51240760, 64050950, 128101900, 256203800]

約数ペア:

[(1, 256203800), (2, 128101900), (4, 64050950), (5, 51240760), (8, 32025475), (10, 25620380), (20, 12810190), (25, 10248152), (40, 6405095), (50, 5124076), (100, 2562038), (200, 1281019), (491, 521800), (982, 260900), (1964, 130450), (2455, 104360), (2609, 98200), (3928, 65225), (4910, 52180), (5218, 49100), (9820, 26090), (10436, 24550), (12275, 20872), (13045, 19640)]