20011123456

素因数分解:

$2^8\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{103}}^1\times {\mathrm{677}}^1$

素因数の和:874

約数の個数: 144

約数和(自身を含む): 43237958400

約数和(自身を除く): 23226834944

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 59, 64, 76, 103, 118, 128, 152, 206, 236, 256, 304, 412, 472, 608, 677, 824, 944, 1121, 1216, 1354, 1648, 1888, 1957, 2242, 2432, 2708, 3296, 3776, 3914, 4484, 4864, 5416, 6077, 6592, 7552, 7828, 8968, 10832, 12154, 12863, 13184, 15104, 15656, 17936, 21664, 24308, 25726, 26368, 31312, 35872, 39943, 43328, 48616, 51452, 62624, 69731, 71744, 79886, 86656, 97232, 102904, 115463, 125248, 139462, 143488, 159772, 173312, 194464, 205808, 230926, 250496, 278924, 286976, 319544, 388928, 411616, 461852, 500992, 557848, 639088, 758917, 777856, 823232, 923704, 1115696, 1278176, 1324889, 1517834, 1555712, 1646464, 1847408, 2231392, 2556352, 2649778, 3035668, 3292928, 3694816, 4114129, 4462784, 5112704, 5299556, 6071336, 7389632, 8228258, 8925568, 10225408, 10599112, 12142672, 14779264, 16456516, 17851136, 21198224, 24285344, 29558528, 32913032, 42396448, 48570688, 65826064, 78168451, 84792896, 97141376, 131652128, 156336902, 169585792, 194282752, 263304256, 312673804, 339171584, 526608512, 625347608, 1053217024, 1250695216, 2501390432, 5002780864, 10005561728, 20011123456]

約数ペア:

[(1, 20011123456), (2, 10005561728), (4, 5002780864), (8, 2501390432), (16, 1250695216), (19, 1053217024), (32, 625347608), (38, 526608512), (59, 339171584), (64, 312673804), (76, 263304256), (103, 194282752), (118, 169585792), (128, 156336902), (152, 131652128), (206, 97141376), (236, 84792896), (256, 78168451), (304, 65826064), (412, 48570688), (472, 42396448), (608, 32913032), (677, 29558528), (824, 24285344), (944, 21198224), (1121, 17851136), (1216, 16456516), (1354, 14779264), (1648, 12142672), (1888, 10599112), (1957, 10225408), (2242, 8925568), (2432, 8228258), (2708, 7389632), (3296, 6071336), (3776, 5299556), (3914, 5112704), (4484, 4462784), (4864, 4114129), (5416, 3694816), (6077, 3292928), (6592, 3035668), (7552, 2649778), (7828, 2556352), (8968, 2231392), (10832, 1847408), (12154, 1646464), (12863, 1555712), (13184, 1517834), (15104, 1324889), (15656, 1278176), (17936, 1115696), (21664, 923704), (24308, 823232), (25726, 777856), (26368, 758917), (31312, 639088), (35872, 557848), (39943, 500992), (43328, 461852), (48616, 411616), (51452, 388928), (62624, 319544), (69731, 286976), (71744, 278924), (79886, 250496), (86656, 230926), (97232, 205808), (102904, 194464), (115463, 173312), (125248, 159772), (139462, 143488)]