21983013

素因数分解:

$3^2\times {\mathrm{13}}^2\times {\mathrm{97}}^1\times {\mathrm{149}}^1$

素因数の和:278

約数の個数: 36

約数和(自身を含む): 34971300

約数和(自身を除く): 12988287

約数列:

[1, 3, 9, 13, 39, 97, 117, 149, 169, 291, 447, 507, 873, 1261, 1341, 1521, 1937, 3783, 5811, 11349, 14453, 16393, 17433, 25181, 43359, 49179, 75543, 130077, 147537, 187889, 226629, 563667, 1691001, 2442557, 7327671, 21983013]

約数ペア:

[(1, 21983013), (3, 7327671), (9, 2442557), (13, 1691001), (39, 563667), (97, 226629), (117, 187889), (149, 147537), (169, 130077), (291, 75543), (447, 49179), (507, 43359), (873, 25181), (1261, 17433), (1341, 16393), (1521, 14453), (1937, 11349), (3783, 5811)]