21931210

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{173}}^1\times {\mathrm{1811}}^1$

素因数の和:1998

約数の個数: 32

約数和(自身を含む): 45401472

約数和(自身を除く): 23470262

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 173, 346, 865, 1211, 1730, 1811, 2422, 3622, 6055, 9055, 12110, 12677, 18110, 25354, 63385, 126770, 313303, 626606, 1566515, 2193121, 3133030, 4386242, 10965605, 21931210]

約数ペア:

[(1, 21931210), (2, 10965605), (5, 4386242), (7, 3133030), (10, 2193121), (14, 1566515), (35, 626606), (70, 313303), (173, 126770), (346, 63385), (865, 25354), (1211, 18110), (1730, 12677), (1811, 12110), (2422, 9055), (3622, 6055)]