20908888

素因数分解:

$2^3\times 7^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{373}}^1$

素因数の和:417

約数の個数: 96

約数和(自身を含む): 53721360

約数和(自身を除く): 32812472

約数列:

[1, 2, 4, 7, 8, 11, 13, 14, 22, 26, 28, 44, 49, 52, 56, 77, 88, 91, 98, 104, 143, 154, 182, 196, 286, 308, 364, 373, 392, 539, 572, 616, 637, 728, 746, 1001, 1078, 1144, 1274, 1492, 2002, 2156, 2548, 2611, 2984, 4004, 4103, 4312, 4849, 5096, 5222, 7007, 8008, 8206, 9698, 10444, 14014, 16412, 18277, 19396, 20888, 28028, 28721, 32824, 33943, 36554, 38792, 53339, 56056, 57442, 67886, 73108, 106678, 114884, 135772, 146216, 201047, 213356, 229768, 237601, 271544, 373373, 402094, 426712, 475202, 746746, 804188, 950404, 1493492, 1608376, 1900808, 2613611, 2986984, 5227222, 10454444, 20908888]

約数ペア:

[(1, 20908888), (2, 10454444), (4, 5227222), (7, 2986984), (8, 2613611), (11, 1900808), (13, 1608376), (14, 1493492), (22, 950404), (26, 804188), (28, 746746), (44, 475202), (49, 426712), (52, 402094), (56, 373373), (77, 271544), (88, 237601), (91, 229768), (98, 213356), (104, 201047), (143, 146216), (154, 135772), (182, 114884), (196, 106678), (286, 73108), (308, 67886), (364, 57442), (373, 56056), (392, 53339), (539, 38792), (572, 36554), (616, 33943), (637, 32824), (728, 28721), (746, 28028), (1001, 20888), (1078, 19396), (1144, 18277), (1274, 16412), (1492, 14014), (2002, 10444), (2156, 9698), (2548, 8206), (2611, 8008), (2984, 7007), (4004, 5222), (4103, 5096), (4312, 4849)]