21426572

素因数分解:

$2^2\times {\mathrm{89}}^1\times {\mathrm{139}}^1\times {\mathrm{433}}^1$

素因数の和:665

約数の個数: 24

約数和(自身を含む): 38278800

約数和(自身を除く): 16852228

約数列:

[1, 2, 4, 89, 139, 178, 278, 356, 433, 556, 866, 1732, 12371, 24742, 38537, 49484, 60187, 77074, 120374, 154148, 240748, 5356643, 10713286, 21426572]

約数ペア:

[(1, 21426572), (2, 10713286), (4, 5356643), (89, 240748), (139, 154148), (178, 120374), (278, 77074), (356, 60187), (433, 49484), (556, 38537), (866, 24742), (1732, 12371)]