18835704

素因数分解:

$2^3\times 3^2\times {\mathrm{131}}^1\times {\mathrm{1997}}^1$

素因数の和:2140

約数の個数: 48

約数和(自身を含む): 51428520

約数和(自身を除く): 32592816

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72, 131, 262, 393, 524, 786, 1048, 1179, 1572, 1997, 2358, 3144, 3994, 4716, 5991, 7988, 9432, 11982, 15976, 17973, 23964, 35946, 47928, 71892, 143784, 261607, 523214, 784821, 1046428, 1569642, 2092856, 2354463, 3139284, 4708926, 6278568, 9417852, 18835704]

約数ペア:

[(1, 18835704), (2, 9417852), (3, 6278568), (4, 4708926), (6, 3139284), (8, 2354463), (9, 2092856), (12, 1569642), (18, 1046428), (24, 784821), (36, 523214), (72, 261607), (131, 143784), (262, 71892), (393, 47928), (524, 35946), (786, 23964), (1048, 17973), (1179, 15976), (1572, 11982), (1997, 9432), (2358, 7988), (3144, 5991), (3994, 4716)]