19955936

素因数分解:

$2^5\times 7^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1$

素因数の和:137

約数の個数: 144

約数和(自身を含む): 54295920

約数和(自身を除く): 34339984

約数列:

[1, 2, 4, 7, 8, 11, 13, 14, 16, 22, 26, 28, 32, 44, 49, 52, 56, 77, 88, 89, 91, 98, 104, 112, 143, 154, 176, 178, 182, 196, 208, 224, 286, 308, 352, 356, 364, 392, 416, 539, 572, 616, 623, 637, 712, 728, 784, 979, 1001, 1078, 1144, 1157, 1232, 1246, 1274, 1424, 1456, 1568, 1958, 2002, 2156, 2288, 2314, 2464, 2492, 2548, 2848, 2912, 3916, 4004, 4312, 4361, 4576, 4628, 4984, 5096, 6853, 7007, 7832, 8008, 8099, 8624, 8722, 9256, 9968, 10192, 12727, 13706, 14014, 15664, 16016, 16198, 17248, 17444, 18512, 19936, 20384, 25454, 27412, 28028, 31328, 32032, 32396, 34888, 37024, 47971, 50908, 54824, 56056, 56693, 64792, 69776, 89089, 95942, 101816, 109648, 112112, 113386, 129584, 139552, 178178, 191884, 203632, 219296, 224224, 226772, 259168, 356356, 383768, 407264, 453544, 623623, 712712, 767536, 907088, 1247246, 1425424, 1535072, 1814176, 2494492, 2850848, 4988984, 9977968, 19955936]

約数ペア:

[(1, 19955936), (2, 9977968), (4, 4988984), (7, 2850848), (8, 2494492), (11, 1814176), (13, 1535072), (14, 1425424), (16, 1247246), (22, 907088), (26, 767536), (28, 712712), (32, 623623), (44, 453544), (49, 407264), (52, 383768), (56, 356356), (77, 259168), (88, 226772), (89, 224224), (91, 219296), (98, 203632), (104, 191884), (112, 178178), (143, 139552), (154, 129584), (176, 113386), (178, 112112), (182, 109648), (196, 101816), (208, 95942), (224, 89089), (286, 69776), (308, 64792), (352, 56693), (356, 56056), (364, 54824), (392, 50908), (416, 47971), (539, 37024), (572, 34888), (616, 32396), (623, 32032), (637, 31328), (712, 28028), (728, 27412), (784, 25454), (979, 20384), (1001, 19936), (1078, 18512), (1144, 17444), (1157, 17248), (1232, 16198), (1246, 16016), (1274, 15664), (1424, 14014), (1456, 13706), (1568, 12727), (1958, 10192), (2002, 9968), (2156, 9256), (2288, 8722), (2314, 8624), (2464, 8099), (2492, 8008), (2548, 7832), (2848, 7007), (2912, 6853), (3916, 5096), (4004, 4984), (4312, 4628), (4361, 4576)]