28707021

素因数分解:

$3^3\times 7^1\times {\mathrm{67}}^1\times {\mathrm{2267}}^1$

素因数の和:2350

約数の個数: 32

約数和(自身を含む): 49351680

約数和(自身を除く): 20644659

約数列:

[1, 3, 7, 9, 21, 27, 63, 67, 189, 201, 469, 603, 1407, 1809, 2267, 4221, 6801, 12663, 15869, 20403, 47607, 61209, 142821, 151889, 428463, 455667, 1063223, 1367001, 3189669, 4101003, 9569007, 28707021]

約数ペア:

[(1, 28707021), (3, 9569007), (7, 4101003), (9, 3189669), (21, 1367001), (27, 1063223), (63, 455667), (67, 428463), (189, 151889), (201, 142821), (469, 61209), (603, 47607), (1407, 20403), (1809, 15869), (2267, 12663), (4221, 6801)]