20538295

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{97}}^1$

素因数の和:219

約数の個数: 32

約数和(自身を含む): 27433728

約数和(自身を除く): 6895433

約数列:

[1, 5, 17, 47, 53, 85, 97, 235, 265, 485, 799, 901, 1649, 2491, 3995, 4505, 4559, 5141, 8245, 12455, 22795, 25705, 42347, 77503, 87397, 211735, 241627, 387515, 436985, 1208135, 4107659, 20538295]

約数ペア:

[(1, 20538295), (5, 4107659), (17, 1208135), (47, 436985), (53, 387515), (85, 241627), (97, 211735), (235, 87397), (265, 77503), (485, 42347), (799, 25705), (901, 22795), (1649, 12455), (2491, 8245), (3995, 5141), (4505, 4559)]