18421263

素因数分解:

$3^4\times 7^1\times {\mathrm{53}}^1\times {\mathrm{613}}^1$

素因数の和:685

約数の個数: 40

約数和(自身を含む): 32095008

約数和(自身を除く): 13673745

約数列:

[1, 3, 7, 9, 21, 27, 53, 63, 81, 159, 189, 371, 477, 567, 613, 1113, 1431, 1839, 3339, 4291, 4293, 5517, 10017, 12873, 16551, 30051, 32489, 38619, 49653, 97467, 115857, 227423, 292401, 347571, 682269, 877203, 2046807, 2631609, 6140421, 18421263]

約数ペア:

[(1, 18421263), (3, 6140421), (7, 2631609), (9, 2046807), (21, 877203), (27, 682269), (53, 347571), (63, 292401), (81, 227423), (159, 115857), (189, 97467), (371, 49653), (477, 38619), (567, 32489), (613, 30051), (1113, 16551), (1431, 12873), (1839, 10017), (3339, 5517), (4291, 4293)]