20895876976

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{103}}^1\times {\mathrm{23789}}^1$

素因数の和:23954

約数の個数: 80

約数和(自身を含む): 45098988480

約数和(自身を除く): 24203111504

約数列:

[1, 2, 4, 8, 13, 16, 26, 41, 52, 82, 103, 104, 164, 206, 208, 328, 412, 533, 656, 824, 1066, 1339, 1648, 2132, 2678, 4223, 4264, 5356, 8446, 8528, 10712, 16892, 21424, 23789, 33784, 47578, 54899, 67568, 95156, 109798, 190312, 219596, 309257, 380624, 439192, 618514, 878384, 975349, 1237028, 1950698, 2450267, 2474056, 3901396, 4900534, 4948112, 7802792, 9801068, 12679537, 15605584, 19602136, 25359074, 31853471, 39204272, 50718148, 63706942, 100460947, 101436296, 127413884, 200921894, 202872592, 254827768, 401843788, 509655536, 803687576, 1305992311, 1607375152, 2611984622, 5223969244, 10447938488, 20895876976]

約数ペア:

[(1, 20895876976), (2, 10447938488), (4, 5223969244), (8, 2611984622), (13, 1607375152), (16, 1305992311), (26, 803687576), (41, 509655536), (52, 401843788), (82, 254827768), (103, 202872592), (104, 200921894), (164, 127413884), (206, 101436296), (208, 100460947), (328, 63706942), (412, 50718148), (533, 39204272), (656, 31853471), (824, 25359074), (1066, 19602136), (1339, 15605584), (1648, 12679537), (2132, 9801068), (2678, 7802792), (4223, 4948112), (4264, 4900534), (5356, 3901396), (8446, 2474056), (8528, 2450267), (10712, 1950698), (16892, 1237028), (21424, 975349), (23789, 878384), (33784, 618514), (47578, 439192), (54899, 380624), (67568, 309257), (95156, 219596), (109798, 190312)]