20385584

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{149}}^1\times {\mathrm{503}}^1$

素因数の和:677

約数の個数: 40

約数和(自身を含む): 42184800

約数和(自身を除く): 21799216

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 149, 272, 298, 503, 596, 1006, 1192, 2012, 2384, 2533, 4024, 5066, 8048, 8551, 10132, 17102, 20264, 34204, 40528, 68408, 74947, 136816, 149894, 299788, 599576, 1199152, 1274099, 2548198, 5096396, 10192792, 20385584]

約数ペア:

[(1, 20385584), (2, 10192792), (4, 5096396), (8, 2548198), (16, 1274099), (17, 1199152), (34, 599576), (68, 299788), (136, 149894), (149, 136816), (272, 74947), (298, 68408), (503, 40528), (596, 34204), (1006, 20264), (1192, 17102), (2012, 10132), (2384, 8551), (2533, 8048), (4024, 5066)]