81985470

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{390407}}^1$

素因数の和:390424

約数の個数: 32

約数和(自身を含む): 224875008

約数和(自身を除く): 142889538

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 210, 390407, 780814, 1171221, 1952035, 2342442, 2732849, 3904070, 5465698, 5856105, 8198547, 11712210, 13664245, 16397094, 27328490, 40992735, 81985470]

約数ペア:

[(1, 81985470), (2, 40992735), (3, 27328490), (5, 16397094), (6, 13664245), (7, 11712210), (10, 8198547), (14, 5856105), (15, 5465698), (21, 3904070), (30, 2732849), (35, 2342442), (42, 1952035), (70, 1171221), (105, 780814), (210, 390407)]