18021591

素因数分解:

$3^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{6977}}^1$

素因数の和:7031

約数の個数: 24

約数和(自身を含む): 30479904

約数和(自身を除く): 12458313

約数列:

[1, 3, 7, 9, 21, 41, 63, 123, 287, 369, 861, 2583, 6977, 20931, 48839, 62793, 146517, 286057, 439551, 858171, 2002399, 2574513, 6007197, 18021591]

約数ペア:

[(1, 18021591), (3, 6007197), (7, 2574513), (9, 2002399), (21, 858171), (41, 439551), (63, 286057), (123, 146517), (287, 62793), (369, 48839), (861, 20931), (2583, 6977)]