399217980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{950519}}^1$

素因数の和:950538

約数の個数: 48

約数和(自身を含む): 1277498880

約数和(自身を除く): 878280900

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 950519, 1901038, 2851557, 3802076, 4752595, 5703114, 6653633, 9505190, 11406228, 13307266, 14257785, 19010380, 19960899, 26614532, 28515570, 33268165, 39921798, 57031140, 66536330, 79843596, 99804495, 133072660, 199608990, 399217980]

約数ペア:

[(1, 399217980), (2, 199608990), (3, 133072660), (4, 99804495), (5, 79843596), (6, 66536330), (7, 57031140), (10, 39921798), (12, 33268165), (14, 28515570), (15, 26614532), (20, 19960899), (21, 19010380), (28, 14257785), (30, 13307266), (35, 11406228), (42, 9505190), (60, 6653633), (70, 5703114), (84, 4752595), (105, 3802076), (140, 2851557), (210, 1901038), (420, 950519)]