20156121215

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{479}}^1\times {\mathrm{10301}}^1$

素因数の和:10847

約数の個数: 32

約数和(自身を含む): 26109388800

約数和(自身を除く): 5953267585

約数列:

[1, 5, 19, 43, 95, 215, 479, 817, 2395, 4085, 9101, 10301, 20597, 45505, 51505, 102985, 195719, 391343, 442943, 978595, 1956715, 2214715, 4934179, 8415917, 24670895, 42079585, 93749401, 212169697, 468747005, 1060848485, 4031224243, 20156121215]

約数ペア:

[(1, 20156121215), (5, 4031224243), (19, 1060848485), (43, 468747005), (95, 212169697), (215, 93749401), (479, 42079585), (817, 24670895), (2395, 8415917), (4085, 4934179), (9101, 2214715), (10301, 1956715), (20597, 978595), (45505, 442943), (51505, 391343), (102985, 195719)]