20123893456

素因数分解:

$2^4\times {\mathrm{229}}^1\times {\mathrm{439}}^1\times {\mathrm{12511}}^1$

素因数の和:13187

約数の個数: 40

約数和(自身を含む): 39252646400

約数和(自身を除く): 19128752944

約数列:

[1, 2, 4, 8, 16, 229, 439, 458, 878, 916, 1756, 1832, 3512, 3664, 7024, 12511, 25022, 50044, 100088, 100531, 200176, 201062, 402124, 804248, 1608496, 2865019, 5492329, 5730038, 10984658, 11460076, 21969316, 22920152, 43938632, 45840304, 87877264, 1257743341, 2515486682, 5030973364, 10061946728, 20123893456]

約数ペア:

[(1, 20123893456), (2, 10061946728), (4, 5030973364), (8, 2515486682), (16, 1257743341), (229, 87877264), (439, 45840304), (458, 43938632), (878, 22920152), (916, 21969316), (1756, 11460076), (1832, 10984658), (3512, 5730038), (3664, 5492329), (7024, 2865019), (12511, 1608496), (25022, 804248), (50044, 402124), (100088, 201062), (100531, 200176)]