20123462420

素因数分解:

$2^2\times 5^1\times {\mathrm{127}}^1\times {\mathrm{499}}^1\times {\mathrm{15877}}^1$

素因数の和:16512

約数の個数: 48

約数和(自身を含む): 42680064000

約数和(自身を除く): 22556601580

約数列:

[1, 2, 4, 5, 10, 20, 127, 254, 499, 508, 635, 998, 1270, 1996, 2495, 2540, 4990, 9980, 15877, 31754, 63373, 63508, 79385, 126746, 158770, 253492, 316865, 317540, 633730, 1267460, 2016379, 4032758, 7922623, 8065516, 10081895, 15845246, 20163790, 31690492, 39613115, 40327580, 79226230, 158452460, 1006173121, 2012346242, 4024692484, 5030865605, 10061731210, 20123462420]

約数ペア:

[(1, 20123462420), (2, 10061731210), (4, 5030865605), (5, 4024692484), (10, 2012346242), (20, 1006173121), (127, 158452460), (254, 79226230), (499, 40327580), (508, 39613115), (635, 31690492), (998, 20163790), (1270, 15845246), (1996, 10081895), (2495, 8065516), (2540, 7922623), (4990, 4032758), (9980, 2016379), (15877, 1267460), (31754, 633730), (63373, 317540), (63508, 316865), (79385, 253492), (126746, 158770)]