20406988816

素因数分解:

$2^4\times {\mathrm{73}}^1\times {\mathrm{97}}^1\times {\mathrm{281}}^1\times {\mathrm{641}}^1$

素因数の和:1100

約数の個数: 80

約数和(自身を含む): 40700863728

約数和(自身を除く): 20293874912

約数列:

[1, 2, 4, 8, 16, 73, 97, 146, 194, 281, 292, 388, 562, 584, 641, 776, 1124, 1168, 1282, 1552, 2248, 2564, 4496, 5128, 7081, 10256, 14162, 20513, 27257, 28324, 41026, 46793, 54514, 56648, 62177, 82052, 93586, 109028, 113296, 124354, 164104, 180121, 187172, 218056, 248708, 328208, 360242, 374344, 436112, 497416, 720484, 748688, 994832, 1440968, 1989761, 2881936, 3979522, 4538921, 7959044, 9077842, 13148833, 15918088, 17471737, 18155684, 26297666, 31836176, 34943474, 36311368, 52595332, 69886948, 72622736, 105190664, 139773896, 210381328, 279547792, 1275436801, 2550873602, 5101747204, 10203494408, 20406988816]

約数ペア:

[(1, 20406988816), (2, 10203494408), (4, 5101747204), (8, 2550873602), (16, 1275436801), (73, 279547792), (97, 210381328), (146, 139773896), (194, 105190664), (281, 72622736), (292, 69886948), (388, 52595332), (562, 36311368), (584, 34943474), (641, 31836176), (776, 26297666), (1124, 18155684), (1168, 17471737), (1282, 15918088), (1552, 13148833), (2248, 9077842), (2564, 7959044), (4496, 4538921), (5128, 3979522), (7081, 2881936), (10256, 1989761), (14162, 1440968), (20513, 994832), (27257, 748688), (28324, 720484), (41026, 497416), (46793, 436112), (54514, 374344), (56648, 360242), (62177, 328208), (82052, 248708), (93586, 218056), (109028, 187172), (113296, 180121), (124354, 164104)]