263798980

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{137}}^1\times {\mathrm{2239}}^1$

素因数の和:2428

約数の個数: 48

約数和(自身を含む): 571253760

約数和(自身を除く): 307454780

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 137, 172, 215, 274, 430, 548, 685, 860, 1370, 2239, 2740, 4478, 5891, 8956, 11195, 11782, 22390, 23564, 29455, 44780, 58910, 96277, 117820, 192554, 306743, 385108, 481385, 613486, 962770, 1226972, 1533715, 1925540, 3067430, 6134860, 13189949, 26379898, 52759796, 65949745, 131899490, 263798980]

約数ペア:

[(1, 263798980), (2, 131899490), (4, 65949745), (5, 52759796), (10, 26379898), (20, 13189949), (43, 6134860), (86, 3067430), (137, 1925540), (172, 1533715), (215, 1226972), (274, 962770), (430, 613486), (548, 481385), (685, 385108), (860, 306743), (1370, 192554), (2239, 117820), (2740, 96277), (4478, 58910), (5891, 44780), (8956, 29455), (11195, 23564), (11782, 22390)]