28771472

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1$

素因数の和:172

約数の個数: 80

約数和(自身を含む): 62853120

約数和(自身を除く): 34081648

約数列:

[1, 2, 4, 8, 16, 19, 31, 38, 43, 62, 71, 76, 86, 124, 142, 152, 172, 248, 284, 304, 344, 496, 568, 589, 688, 817, 1136, 1178, 1333, 1349, 1634, 2201, 2356, 2666, 2698, 3053, 3268, 4402, 4712, 5332, 5396, 6106, 6536, 8804, 9424, 10664, 10792, 12212, 13072, 17608, 21328, 21584, 24424, 25327, 35216, 41819, 48848, 50654, 58007, 83638, 94643, 101308, 116014, 167276, 189286, 202616, 232028, 334552, 378572, 405232, 464056, 669104, 757144, 928112, 1514288, 1798217, 3596434, 7192868, 14385736, 28771472]

約数ペア:

[(1, 28771472), (2, 14385736), (4, 7192868), (8, 3596434), (16, 1798217), (19, 1514288), (31, 928112), (38, 757144), (43, 669104), (62, 464056), (71, 405232), (76, 378572), (86, 334552), (124, 232028), (142, 202616), (152, 189286), (172, 167276), (248, 116014), (284, 101308), (304, 94643), (344, 83638), (496, 58007), (568, 50654), (589, 48848), (688, 41819), (817, 35216), (1136, 25327), (1178, 24424), (1333, 21584), (1349, 21328), (1634, 17608), (2201, 13072), (2356, 12212), (2666, 10792), (2698, 10664), (3053, 9424), (3268, 8804), (4402, 6536), (4712, 6106), (5332, 5396)]