18971824

素因数分解:

$2^4\times {\mathrm{37}}^1\times {\mathrm{73}}^1\times {\mathrm{439}}^1$

素因数の和:557

約数の個数: 40

約数和(自身を含む): 38355680

約数和(自身を除く): 19383856

約数列:

[1, 2, 4, 8, 16, 37, 73, 74, 146, 148, 292, 296, 439, 584, 592, 878, 1168, 1756, 2701, 3512, 5402, 7024, 10804, 16243, 21608, 32047, 32486, 43216, 64094, 64972, 128188, 129944, 256376, 259888, 512752, 1185739, 2371478, 4742956, 9485912, 18971824]

約数ペア:

[(1, 18971824), (2, 9485912), (4, 4742956), (8, 2371478), (16, 1185739), (37, 512752), (73, 259888), (74, 256376), (146, 129944), (148, 128188), (292, 64972), (296, 64094), (439, 43216), (584, 32486), (592, 32047), (878, 21608), (1168, 16243), (1756, 10804), (2701, 7024), (3512, 5402)]