287813820

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{685271}}^1$

素因数の和:685290

約数の個数: 48

約数和(自身を含む): 921005568

約数和(自身を除く): 633191748

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, 685271, 1370542, 2055813, 2741084, 3426355, 4111626, 4796897, 6852710, 8223252, 9593794, 10279065, 13705420, 14390691, 19187588, 20558130, 23984485, 28781382, 41116260, 47968970, 57562764, 71953455, 95937940, 143906910, 287813820]

約数ペア:

[(1, 287813820), (2, 143906910), (3, 95937940), (4, 71953455), (5, 57562764), (6, 47968970), (7, 41116260), (10, 28781382), (12, 23984485), (14, 20558130), (15, 19187588), (20, 14390691), (21, 13705420), (28, 10279065), (30, 9593794), (35, 8223252), (42, 6852710), (60, 4796897), (70, 4111626), (84, 3426355), (105, 2741084), (140, 2055813), (210, 1370542), (420, 685271)]