20136775040

素因数分解:

$2^7\times 5^1\times {\mathrm{131}}^1\times {\mathrm{461}}^1\times {\mathrm{521}}^1$

素因数の和:1132

約数の個数: 128

約数和(自身を含む): 48705481440

約数和(自身を除く): 28568706400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 131, 160, 262, 320, 461, 521, 524, 640, 655, 922, 1042, 1048, 1310, 1844, 2084, 2096, 2305, 2605, 2620, 3688, 4168, 4192, 4610, 5210, 5240, 7376, 8336, 8384, 9220, 10420, 10480, 14752, 16672, 16768, 18440, 20840, 20960, 29504, 33344, 36880, 41680, 41920, 59008, 60391, 66688, 68251, 73760, 83360, 83840, 120782, 136502, 147520, 166720, 240181, 241564, 273004, 295040, 301955, 333440, 341255, 480362, 483128, 546008, 603910, 682510, 960724, 966256, 1092016, 1200905, 1207820, 1365020, 1921448, 1932512, 2184032, 2401810, 2415640, 2730040, 3842896, 3865024, 4368064, 4803620, 4831280, 5460080, 7685792, 7730048, 8736128, 9607240, 9662560, 10920160, 15371584, 19214480, 19325120, 21840320, 30743168, 31463711, 38428960, 38650240, 43680640, 62927422, 76857920, 125854844, 153715840, 157318555, 251709688, 314637110, 503419376, 629274220, 1006838752, 1258548440, 2013677504, 2517096880, 4027355008, 5034193760, 10068387520, 20136775040]

約数ペア:

[(1, 20136775040), (2, 10068387520), (4, 5034193760), (5, 4027355008), (8, 2517096880), (10, 2013677504), (16, 1258548440), (20, 1006838752), (32, 629274220), (40, 503419376), (64, 314637110), (80, 251709688), (128, 157318555), (131, 153715840), (160, 125854844), (262, 76857920), (320, 62927422), (461, 43680640), (521, 38650240), (524, 38428960), (640, 31463711), (655, 30743168), (922, 21840320), (1042, 19325120), (1048, 19214480), (1310, 15371584), (1844, 10920160), (2084, 9662560), (2096, 9607240), (2305, 8736128), (2605, 7730048), (2620, 7685792), (3688, 5460080), (4168, 4831280), (4192, 4803620), (4610, 4368064), (5210, 3865024), (5240, 3842896), (7376, 2730040), (8336, 2415640), (8384, 2401810), (9220, 2184032), (10420, 1932512), (10480, 1921448), (14752, 1365020), (16672, 1207820), (16768, 1200905), (18440, 1092016), (20840, 966256), (20960, 960724), (29504, 682510), (33344, 603910), (36880, 546008), (41680, 483128), (41920, 480362), (59008, 341255), (60391, 333440), (66688, 301955), (68251, 295040), (73760, 273004), (83360, 241564), (83840, 240181), (120782, 166720), (136502, 147520)]