19964770

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{3907}}^1$

素因数の和:3994

約数の個数: 32

約数和(自身を含む): 41643648

約数和(自身を除く): 21678878

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 73, 146, 365, 511, 730, 1022, 2555, 3907, 5110, 7814, 19535, 27349, 39070, 54698, 136745, 273490, 285211, 570422, 1426055, 1996477, 2852110, 3992954, 9982385, 19964770]

約数ペア:

[(1, 19964770), (2, 9982385), (5, 3992954), (7, 2852110), (10, 1996477), (14, 1426055), (35, 570422), (70, 285211), (73, 273490), (146, 136745), (365, 54698), (511, 39070), (730, 27349), (1022, 19535), (2555, 7814), (3907, 5110)]