81821586

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{197}}^1$

素因数の和:280

約数の個数: 128

約数和(自身を含む): 218972160

約数和(自身を除く): 137150574

約数列:

[1, 2, 3, 6, 7, 11, 14, 21, 22, 29, 31, 33, 42, 58, 62, 66, 77, 87, 93, 154, 174, 186, 197, 203, 217, 231, 319, 341, 394, 406, 434, 462, 591, 609, 638, 651, 682, 899, 957, 1023, 1182, 1218, 1302, 1379, 1798, 1914, 2046, 2167, 2233, 2387, 2697, 2758, 4137, 4334, 4466, 4774, 5394, 5713, 6107, 6293, 6501, 6699, 7161, 8274, 9889, 11426, 12214, 12586, 13002, 13398, 14322, 15169, 17139, 18321, 18879, 19778, 29667, 30338, 34278, 36642, 37758, 39991, 42749, 45507, 59334, 62843, 67177, 69223, 79982, 85498, 91014, 119973, 125686, 128247, 134354, 138446, 177103, 188529, 201531, 207669, 239946, 256494, 354206, 377058, 403062, 415338, 439901, 470239, 531309, 879802, 940478, 1062618, 1239721, 1319703, 1410717, 1948133, 2479442, 2639406, 2821434, 3719163, 3896266, 5844399, 7438326, 11688798, 13636931, 27273862, 40910793, 81821586]

約数ペア:

[(1, 81821586), (2, 40910793), (3, 27273862), (6, 13636931), (7, 11688798), (11, 7438326), (14, 5844399), (21, 3896266), (22, 3719163), (29, 2821434), (31, 2639406), (33, 2479442), (42, 1948133), (58, 1410717), (62, 1319703), (66, 1239721), (77, 1062618), (87, 940478), (93, 879802), (154, 531309), (174, 470239), (186, 439901), (197, 415338), (203, 403062), (217, 377058), (231, 354206), (319, 256494), (341, 239946), (394, 207669), (406, 201531), (434, 188529), (462, 177103), (591, 138446), (609, 134354), (638, 128247), (651, 125686), (682, 119973), (899, 91014), (957, 85498), (1023, 79982), (1182, 69223), (1218, 67177), (1302, 62843), (1379, 59334), (1798, 45507), (1914, 42749), (2046, 39991), (2167, 37758), (2233, 36642), (2387, 34278), (2697, 30338), (2758, 29667), (4137, 19778), (4334, 18879), (4466, 18321), (4774, 17139), (5394, 15169), (5713, 14322), (6107, 13398), (6293, 13002), (6501, 12586), (6699, 12214), (7161, 11426), (8274, 9889)]