21058840

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{229}}^1$

素因数の和:281

約数の個数: 96

約数和(自身を含む): 55062000

約数和(自身を除く): 34003160

約数列:

[1, 2, 4, 5, 8, 10, 11, 19, 20, 22, 38, 40, 44, 55, 76, 88, 95, 110, 121, 152, 190, 209, 220, 229, 242, 380, 418, 440, 458, 484, 605, 760, 836, 916, 968, 1045, 1145, 1210, 1672, 1832, 2090, 2290, 2299, 2420, 2519, 4180, 4351, 4580, 4598, 4840, 5038, 8360, 8702, 9160, 9196, 10076, 11495, 12595, 17404, 18392, 20152, 21755, 22990, 25190, 27709, 34808, 43510, 45980, 47861, 50380, 55418, 87020, 91960, 95722, 100760, 110836, 138545, 174040, 191444, 221672, 239305, 277090, 382888, 478610, 526471, 554180, 957220, 1052942, 1108360, 1914440, 2105884, 2632355, 4211768, 5264710, 10529420, 21058840]

約数ペア:

[(1, 21058840), (2, 10529420), (4, 5264710), (5, 4211768), (8, 2632355), (10, 2105884), (11, 1914440), (19, 1108360), (20, 1052942), (22, 957220), (38, 554180), (40, 526471), (44, 478610), (55, 382888), (76, 277090), (88, 239305), (95, 221672), (110, 191444), (121, 174040), (152, 138545), (190, 110836), (209, 100760), (220, 95722), (229, 91960), (242, 87020), (380, 55418), (418, 50380), (440, 47861), (458, 45980), (484, 43510), (605, 34808), (760, 27709), (836, 25190), (916, 22990), (968, 21755), (1045, 20152), (1145, 18392), (1210, 17404), (1672, 12595), (1832, 11495), (2090, 10076), (2290, 9196), (2299, 9160), (2420, 8702), (2519, 8360), (4180, 5038), (4351, 4840), (4580, 4598)]