21035545

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{4057}}^1$

素因数の和:4140

約数の個数: 16

約数和(自身を含む): 27172368

約数和(自身を除く): 6136823

約数列:

[1, 5, 17, 61, 85, 305, 1037, 4057, 5185, 20285, 68969, 247477, 344845, 1237385, 4207109, 21035545]

約数ペア:

[(1, 21035545), (5, 4207109), (17, 1237385), (61, 344845), (85, 247477), (305, 68969), (1037, 20285), (4057, 5185)]