18858021

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{1031}}^1$

素因数の和:1121

約数の個数: 32

約数和(自身を含む): 31438848

約数和(自身を除く): 12580827

約数列:

[1, 3, 7, 13, 21, 39, 67, 91, 201, 273, 469, 871, 1031, 1407, 2613, 3093, 6097, 7217, 13403, 18291, 21651, 40209, 69077, 93821, 207231, 281463, 483539, 898001, 1450617, 2694003, 6286007, 18858021]

約数ペア:

[(1, 18858021), (3, 6286007), (7, 2694003), (13, 1450617), (21, 898001), (39, 483539), (67, 281463), (91, 207231), (201, 93821), (273, 69077), (469, 40209), (871, 21651), (1031, 18291), (1407, 13403), (2613, 7217), (3093, 6097)]