81427290

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{387749}}^1$

素因数の和:387766

約数の個数: 32

約数和(自身を含む): 223344000

約数和(自身を除く): 141916710

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 210, 387749, 775498, 1163247, 1938745, 2326494, 2714243, 3877490, 5428486, 5816235, 8142729, 11632470, 13571215, 16285458, 27142430, 40713645, 81427290]

約数ペア:

[(1, 81427290), (2, 40713645), (3, 27142430), (5, 16285458), (6, 13571215), (7, 11632470), (10, 8142729), (14, 5816235), (15, 5428486), (21, 3877490), (30, 2714243), (35, 2326494), (42, 1938745), (70, 1163247), (105, 775498), (210, 387749)]