21283695

素因数分解:

$3^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{4261}}^1$

素因数の和:4312

約数の個数: 32

約数和(自身を含む): 38869440

約数和(自身を除く): 17585745

約数列:

[1, 3, 5, 9, 15, 27, 37, 45, 111, 135, 185, 333, 555, 999, 1665, 4261, 4995, 12783, 21305, 38349, 63915, 115047, 157657, 191745, 472971, 575235, 788285, 1418913, 2364855, 4256739, 7094565, 21283695]

約数ペア:

[(1, 21283695), (3, 7094565), (5, 4256739), (9, 2364855), (15, 1418913), (27, 788285), (37, 575235), (45, 472971), (111, 191745), (135, 157657), (185, 115047), (333, 63915), (555, 38349), (999, 21305), (1665, 12783), (4261, 4995)]