21096855

素因数分解:

$3^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{4007}}^1$

素因数の和:4037

約数の個数: 40

約数和(自身を含む): 40737312

約数和(自身を除く): 19640457

約数列:

[1, 3, 5, 9, 13, 15, 27, 39, 45, 65, 81, 117, 135, 195, 351, 405, 585, 1053, 1755, 4007, 5265, 12021, 20035, 36063, 52091, 60105, 108189, 156273, 180315, 260455, 324567, 468819, 540945, 781365, 1406457, 1622835, 2344095, 4219371, 7032285, 21096855]

約数ペア:

[(1, 21096855), (3, 7032285), (5, 4219371), (9, 2344095), (13, 1622835), (15, 1406457), (27, 781365), (39, 540945), (45, 468819), (65, 324567), (81, 260455), (117, 180315), (135, 156273), (195, 108189), (351, 60105), (405, 52091), (585, 36063), (1053, 20035), (1755, 12021), (4007, 5265)]