20001224

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{181}}^1\times {\mathrm{727}}^1$

素因数の和:933

約数の個数: 32

約数和(自身を含む): 39748800

約数和(自身を除く): 19747576

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 181, 362, 724, 727, 1448, 1454, 2908, 3439, 5816, 6878, 13756, 13813, 27512, 27626, 55252, 110504, 131587, 263174, 526348, 1052696, 2500153, 5000306, 10000612, 20001224]

約数ペア:

[(1, 20001224), (2, 10000612), (4, 5000306), (8, 2500153), (19, 1052696), (38, 526348), (76, 263174), (152, 131587), (181, 110504), (362, 55252), (724, 27626), (727, 27512), (1448, 13813), (1454, 13756), (2908, 6878), (3439, 5816)]