20449263

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{89}}^1\times {\mathrm{139}}^1$

素因数の和:279

約数の個数: 32

約数和(自身を含む): 30240000

約数和(自身を除く): 9790737

約数列:

[1, 3, 19, 29, 57, 87, 89, 139, 267, 417, 551, 1653, 1691, 2581, 2641, 4031, 5073, 7743, 7923, 12093, 12371, 37113, 49039, 76589, 147117, 229767, 235049, 358759, 705147, 1076277, 6816421, 20449263]

約数ペア:

[(1, 20449263), (3, 6816421), (19, 1076277), (29, 705147), (57, 358759), (87, 235049), (89, 229767), (139, 147117), (267, 76589), (417, 49039), (551, 37113), (1653, 12371), (1691, 12093), (2581, 7923), (2641, 7743), (4031, 5073)]