21000512718

素因数分解:

$2^1\times 3^2\times {\mathrm{107}}^1\times {\mathrm{137}}^1\times {\mathrm{79589}}^1$

素因数の和:79841

約数の個数: 48

約数和(自身を含む): 46262165040

約数和(自身を除く): 25261652322

約数列:

[1, 2, 3, 6, 9, 18, 107, 137, 214, 274, 321, 411, 642, 822, 963, 1233, 1926, 2466, 14659, 29318, 43977, 79589, 87954, 131931, 159178, 238767, 263862, 477534, 716301, 1432602, 8516023, 10903693, 17032046, 21807386, 25548069, 32711079, 51096138, 65422158, 76644207, 98133237, 153288414, 196266474, 1166695151, 2333390302, 3500085453, 7000170906, 10500256359, 21000512718]

約数ペア:

[(1, 21000512718), (2, 10500256359), (3, 7000170906), (6, 3500085453), (9, 2333390302), (18, 1166695151), (107, 196266474), (137, 153288414), (214, 98133237), (274, 76644207), (321, 65422158), (411, 51096138), (642, 32711079), (822, 25548069), (963, 21807386), (1233, 17032046), (1926, 10903693), (2466, 8516023), (14659, 1432602), (29318, 716301), (43977, 477534), (79589, 263862), (87954, 238767), (131931, 159178)]