21780453616

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{491}}^1\times {\mathrm{3559}}^1$

素因数の和:4118

約数の個数: 80

約数和(自身を含む): 45609580800

約数和(自身を除く): 23829127184

約数列:

[1, 2, 4, 8, 16, 19, 38, 41, 76, 82, 152, 164, 304, 328, 491, 656, 779, 982, 1558, 1964, 3116, 3559, 3928, 6232, 7118, 7856, 9329, 12464, 14236, 18658, 20131, 28472, 37316, 40262, 56944, 67621, 74632, 80524, 135242, 145919, 149264, 161048, 270484, 291838, 322096, 382489, 540968, 583676, 764978, 1081936, 1167352, 1529956, 1747469, 2334704, 2772461, 3059912, 3494938, 5544922, 6119824, 6989876, 11089844, 13979752, 22179688, 27959504, 33201911, 44359376, 66403822, 71646229, 132807644, 143292458, 265615288, 286584916, 531230576, 573169832, 1146339664, 1361278351, 2722556702, 5445113404, 10890226808, 21780453616]

約数ペア:

[(1, 21780453616), (2, 10890226808), (4, 5445113404), (8, 2722556702), (16, 1361278351), (19, 1146339664), (38, 573169832), (41, 531230576), (76, 286584916), (82, 265615288), (152, 143292458), (164, 132807644), (304, 71646229), (328, 66403822), (491, 44359376), (656, 33201911), (779, 27959504), (982, 22179688), (1558, 13979752), (1964, 11089844), (3116, 6989876), (3559, 6119824), (3928, 5544922), (6232, 3494938), (7118, 3059912), (7856, 2772461), (9329, 2334704), (12464, 1747469), (14236, 1529956), (18658, 1167352), (20131, 1081936), (28472, 764978), (37316, 583676), (40262, 540968), (56944, 382489), (67621, 322096), (74632, 291838), (80524, 270484), (135242, 161048), (145919, 149264)]