20168848

素因数分解:

$2^4\times 7^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{157}}^1$

素因数の和:240

約数の個数: 80

約数和(自身を含む): 47647744

約数和(自身を除く): 27478896

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 31, 37, 56, 62, 74, 112, 124, 148, 157, 217, 248, 259, 296, 314, 434, 496, 518, 592, 628, 868, 1036, 1099, 1147, 1256, 1736, 2072, 2198, 2294, 2512, 3472, 4144, 4396, 4588, 4867, 5809, 8029, 8792, 9176, 9734, 11618, 16058, 17584, 18352, 19468, 23236, 32116, 34069, 38936, 40663, 46472, 64232, 68138, 77872, 81326, 92944, 128464, 136276, 162652, 180079, 272552, 325304, 360158, 545104, 650608, 720316, 1260553, 1440632, 2521106, 2881264, 5042212, 10084424, 20168848]

約数ペア:

[(1, 20168848), (2, 10084424), (4, 5042212), (7, 2881264), (8, 2521106), (14, 1440632), (16, 1260553), (28, 720316), (31, 650608), (37, 545104), (56, 360158), (62, 325304), (74, 272552), (112, 180079), (124, 162652), (148, 136276), (157, 128464), (217, 92944), (248, 81326), (259, 77872), (296, 68138), (314, 64232), (434, 46472), (496, 40663), (518, 38936), (592, 34069), (628, 32116), (868, 23236), (1036, 19468), (1099, 18352), (1147, 17584), (1256, 16058), (1736, 11618), (2072, 9734), (2198, 9176), (2294, 8792), (2512, 8029), (3472, 5809), (4144, 4867), (4396, 4588)]