21951441

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{101}}^1$

素因数の和:198

約数の個数: 48

約数和(自身を含む): 35642880

約数和(自身を除く): 13691439

約数列:

[1, 3, 9, 19, 31, 41, 57, 93, 101, 123, 171, 279, 303, 369, 589, 779, 909, 1271, 1767, 1919, 2337, 3131, 3813, 4141, 5301, 5757, 7011, 9393, 11439, 12423, 17271, 24149, 28179, 37269, 59489, 72447, 78679, 128371, 178467, 217341, 236037, 385113, 535401, 708111, 1155339, 2439049, 7317147, 21951441]

約数ペア:

[(1, 21951441), (3, 7317147), (9, 2439049), (19, 1155339), (31, 708111), (41, 535401), (57, 385113), (93, 236037), (101, 217341), (123, 178467), (171, 128371), (279, 78679), (303, 72447), (369, 59489), (589, 37269), (779, 28179), (909, 24149), (1271, 17271), (1767, 12423), (1919, 11439), (2337, 9393), (3131, 7011), (3813, 5757), (4141, 5301)]