21991074765

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{373}}^1\times {\mathrm{4523}}^1$

素因数の和:4994

約数の個数: 64

約数和(自身を含む): 38983127040

約数和(自身を除く): 16992052275

約数列:

[1, 3, 5, 11, 15, 33, 55, 79, 165, 237, 373, 395, 869, 1119, 1185, 1865, 2607, 4103, 4345, 4523, 5595, 12309, 13035, 13569, 20515, 22615, 29467, 49753, 61545, 67845, 88401, 147335, 149259, 248765, 324137, 357317, 442005, 746295, 972411, 1071951, 1620685, 1687079, 1786585, 3930487, 4862055, 5061237, 5359755, 8435395, 11791461, 18557869, 19652435, 25306185, 55673607, 58957305, 92789345, 133279241, 278368035, 399837723, 666396205, 1466071651, 1999188615, 4398214953, 7330358255, 21991074765]

約数ペア:

[(1, 21991074765), (3, 7330358255), (5, 4398214953), (11, 1999188615), (15, 1466071651), (33, 666396205), (55, 399837723), (79, 278368035), (165, 133279241), (237, 92789345), (373, 58957305), (395, 55673607), (869, 25306185), (1119, 19652435), (1185, 18557869), (1865, 11791461), (2607, 8435395), (4103, 5359755), (4345, 5061237), (4523, 4862055), (5595, 3930487), (12309, 1786585), (13035, 1687079), (13569, 1620685), (20515, 1071951), (22615, 972411), (29467, 746295), (49753, 442005), (61545, 357317), (67845, 324137), (88401, 248765), (147335, 149259)]