20125945168

素因数分解:

$2^4\times 7^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{255613}}^1$

素因数の和:255684

約数の個数: 80

約数和(自身を含む): 48178126720

約数和(自身を除く): 28052181552

約数列:

[1, 2, 4, 7, 8, 14, 16, 19, 28, 37, 38, 56, 74, 76, 112, 133, 148, 152, 259, 266, 296, 304, 518, 532, 592, 703, 1036, 1064, 1406, 2072, 2128, 2812, 4144, 4921, 5624, 9842, 11248, 19684, 39368, 78736, 255613, 511226, 1022452, 1789291, 2044904, 3578582, 4089808, 4856647, 7157164, 9457681, 9713294, 14314328, 18915362, 19426588, 28628656, 33996529, 37830724, 38853176, 66203767, 67993058, 75661448, 77706352, 132407534, 135986116, 151322896, 179695939, 264815068, 271972232, 359391878, 529630136, 543944464, 718783756, 1059260272, 1257871573, 1437567512, 2515743146, 2875135024, 5031486292, 10062972584, 20125945168]

約数ペア:

[(1, 20125945168), (2, 10062972584), (4, 5031486292), (7, 2875135024), (8, 2515743146), (14, 1437567512), (16, 1257871573), (19, 1059260272), (28, 718783756), (37, 543944464), (38, 529630136), (56, 359391878), (74, 271972232), (76, 264815068), (112, 179695939), (133, 151322896), (148, 135986116), (152, 132407534), (259, 77706352), (266, 75661448), (296, 67993058), (304, 66203767), (518, 38853176), (532, 37830724), (592, 33996529), (703, 28628656), (1036, 19426588), (1064, 18915362), (1406, 14314328), (2072, 9713294), (2128, 9457681), (2812, 7157164), (4144, 4856647), (4921, 4089808), (5624, 3578582), (9842, 2044904), (11248, 1789291), (19684, 1022452), (39368, 511226), (78736, 255613)]