20931291264

素因数分解:

$2^7\times 3^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{135257}}^1$

素因数の和:135318

約数の個数: 128

約数和(自身を含む): 61807495680

約数和(自身を除く): 40876204416

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 31, 32, 39, 48, 52, 62, 64, 78, 93, 96, 104, 124, 128, 156, 186, 192, 208, 248, 312, 372, 384, 403, 416, 496, 624, 744, 806, 832, 992, 1209, 1248, 1488, 1612, 1664, 1984, 2418, 2496, 2976, 3224, 3968, 4836, 4992, 5952, 6448, 9672, 11904, 12896, 19344, 25792, 38688, 51584, 77376, 135257, 154752, 270514, 405771, 541028, 811542, 1082056, 1623084, 1758341, 2164112, 3246168, 3516682, 4192967, 4328224, 5275023, 6492336, 7033364, 8385934, 8656448, 10550046, 12578901, 12984672, 14066728, 16771868, 17312896, 21100092, 25157802, 25969344, 28133456, 33543736, 42200184, 50315604, 51938688, 54508571, 56266912, 67087472, 84400368, 100631208, 109017142, 112533824, 134174944, 163525713, 168800736, 201262416, 218034284, 225067648, 268349888, 327051426, 337601472, 402524832, 436068568, 536699776, 654102852, 675202944, 805049664, 872137136, 1308205704, 1610099328, 1744274272, 2616411408, 3488548544, 5232822816, 6977097088, 10465645632, 20931291264]

約数ペア:

[(1, 20931291264), (2, 10465645632), (3, 6977097088), (4, 5232822816), (6, 3488548544), (8, 2616411408), (12, 1744274272), (13, 1610099328), (16, 1308205704), (24, 872137136), (26, 805049664), (31, 675202944), (32, 654102852), (39, 536699776), (48, 436068568), (52, 402524832), (62, 337601472), (64, 327051426), (78, 268349888), (93, 225067648), (96, 218034284), (104, 201262416), (124, 168800736), (128, 163525713), (156, 134174944), (186, 112533824), (192, 109017142), (208, 100631208), (248, 84400368), (312, 67087472), (372, 56266912), (384, 54508571), (403, 51938688), (416, 50315604), (496, 42200184), (624, 33543736), (744, 28133456), (806, 25969344), (832, 25157802), (992, 21100092), (1209, 17312896), (1248, 16771868), (1488, 14066728), (1612, 12984672), (1664, 12578901), (1984, 10550046), (2418, 8656448), (2496, 8385934), (2976, 7033364), (3224, 6492336), (3968, 5275023), (4836, 4328224), (4992, 4192967), (5952, 3516682), (6448, 3246168), (9672, 2164112), (11904, 1758341), (12896, 1623084), (19344, 1082056), (25792, 811542), (38688, 541028), (51584, 405771), (77376, 270514), (135257, 154752)]