21236175

素因数分解:

$3^4\times 5^2\times {\mathrm{10487}}^1$

素因数の和:10509

約数の個数: 30

約数和(自身を含む): 39340488

約数和(自身を除く): 18104313

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 81, 135, 225, 405, 675, 2025, 10487, 31461, 52435, 94383, 157305, 262175, 283149, 471915, 786525, 849447, 1415745, 2359575, 4247235, 7078725, 21236175]

約数ペア:

[(1, 21236175), (3, 7078725), (5, 4247235), (9, 2359575), (15, 1415745), (25, 849447), (27, 786525), (45, 471915), (75, 283149), (81, 262175), (135, 157305), (225, 94383), (405, 52435), (675, 31461), (2025, 10487)]