21125412

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{7621}}^1$

素因数の和:7649

約数の個数: 72

約数和(自身を含む): 66585792

約数和(自身を除く): 45460380

約数列:

[1, 2, 3, 4, 6, 7, 9, 11, 12, 14, 18, 21, 22, 28, 33, 36, 42, 44, 63, 66, 77, 84, 99, 126, 132, 154, 198, 231, 252, 308, 396, 462, 693, 924, 1386, 2772, 7621, 15242, 22863, 30484, 45726, 53347, 68589, 83831, 91452, 106694, 137178, 160041, 167662, 213388, 251493, 274356, 320082, 335324, 480123, 502986, 586817, 640164, 754479, 960246, 1005972, 1173634, 1508958, 1760451, 1920492, 2347268, 3017916, 3520902, 5281353, 7041804, 10562706, 21125412]

約数ペア:

[(1, 21125412), (2, 10562706), (3, 7041804), (4, 5281353), (6, 3520902), (7, 3017916), (9, 2347268), (11, 1920492), (12, 1760451), (14, 1508958), (18, 1173634), (21, 1005972), (22, 960246), (28, 754479), (33, 640164), (36, 586817), (42, 502986), (44, 480123), (63, 335324), (66, 320082), (77, 274356), (84, 251493), (99, 213388), (126, 167662), (132, 160041), (154, 137178), (198, 106694), (231, 91452), (252, 83831), (308, 68589), (396, 53347), (462, 45726), (693, 30484), (924, 22863), (1386, 15242), (2772, 7621)]