20675748688

素因数分解:

$2^4\times 7^1\times {\mathrm{67}}^1\times {\mathrm{71}}^1\times {\mathrm{151}}^1\times {\mathrm{257}}^1$

素因数の和:561

約数の個数: 160

約数和(自身を含む): 47616380928

約数和(自身を除く): 26940632240

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 67, 71, 112, 134, 142, 151, 257, 268, 284, 302, 469, 497, 514, 536, 568, 604, 938, 994, 1028, 1057, 1072, 1136, 1208, 1799, 1876, 1988, 2056, 2114, 2416, 3598, 3752, 3976, 4112, 4228, 4757, 7196, 7504, 7952, 8456, 9514, 10117, 10721, 14392, 16912, 17219, 18247, 19028, 20234, 21442, 28784, 33299, 34438, 36494, 38056, 38807, 40468, 42884, 66598, 68876, 70819, 72988, 75047, 76112, 77614, 80936, 85768, 120533, 127729, 133196, 137752, 141638, 145976, 150094, 155228, 161872, 171536, 241066, 255458, 266392, 271649, 275504, 283276, 291952, 300188, 310456, 482132, 510916, 532784, 543298, 566552, 600376, 620912, 718307, 964264, 1021832, 1086596, 1133104, 1200752, 1222549, 1436614, 1928528, 2043664, 2173192, 2445098, 2600069, 2755297, 2873228, 4346384, 4890196, 5028149, 5200138, 5510594, 5746456, 8557843, 9780392, 10056298, 10400276, 11021188, 11492912, 17115686, 18200483, 19287079, 19560784, 20112596, 20800552, 22042376, 34231372, 36400966, 38574158, 40225192, 41601104, 44084752, 68462744, 72801932, 77148316, 80450384, 136925488, 145603864, 154296632, 184604899, 291207728, 308593264, 369209798, 738419596, 1292234293, 1476839192, 2584468586, 2953678384, 5168937172, 10337874344, 20675748688]

約数ペア:

[(1, 20675748688), (2, 10337874344), (4, 5168937172), (7, 2953678384), (8, 2584468586), (14, 1476839192), (16, 1292234293), (28, 738419596), (56, 369209798), (67, 308593264), (71, 291207728), (112, 184604899), (134, 154296632), (142, 145603864), (151, 136925488), (257, 80450384), (268, 77148316), (284, 72801932), (302, 68462744), (469, 44084752), (497, 41601104), (514, 40225192), (536, 38574158), (568, 36400966), (604, 34231372), (938, 22042376), (994, 20800552), (1028, 20112596), (1057, 19560784), (1072, 19287079), (1136, 18200483), (1208, 17115686), (1799, 11492912), (1876, 11021188), (1988, 10400276), (2056, 10056298), (2114, 9780392), (2416, 8557843), (3598, 5746456), (3752, 5510594), (3976, 5200138), (4112, 5028149), (4228, 4890196), (4757, 4346384), (7196, 2873228), (7504, 2755297), (7952, 2600069), (8456, 2445098), (9514, 2173192), (10117, 2043664), (10721, 1928528), (14392, 1436614), (16912, 1222549), (17219, 1200752), (18247, 1133104), (19028, 1086596), (20234, 1021832), (21442, 964264), (28784, 718307), (33299, 620912), (34438, 600376), (36494, 566552), (38056, 543298), (38807, 532784), (40468, 510916), (42884, 482132), (66598, 310456), (68876, 300188), (70819, 291952), (72988, 283276), (75047, 275504), (76112, 271649), (77614, 266392), (80936, 255458), (85768, 241066), (120533, 171536), (127729, 161872), (133196, 155228), (137752, 150094), (141638, 145976)]