21561764

素因数分解:

$2^2\times 7^2\times {\mathrm{23}}^1\times {\mathrm{4783}}^1$

素因数の和:4824

約数の個数: 36

約数和(自身を含む): 45811584

約数和(自身を除く): 24249820

約数列:

[1, 2, 4, 7, 14, 23, 28, 46, 49, 92, 98, 161, 196, 322, 644, 1127, 2254, 4508, 4783, 9566, 19132, 33481, 66962, 110009, 133924, 220018, 234367, 440036, 468734, 770063, 937468, 1540126, 3080252, 5390441, 10780882, 21561764]

約数ペア:

[(1, 21561764), (2, 10780882), (4, 5390441), (7, 3080252), (14, 1540126), (23, 937468), (28, 770063), (46, 468734), (49, 440036), (92, 234367), (98, 220018), (161, 133924), (196, 110009), (322, 66962), (644, 33481), (1127, 19132), (2254, 9566), (4508, 4783)]