21398030

素因数分解:

$2^1\times 5^1\times {\mathrm{137}}^1\times {\mathrm{15619}}^1$

素因数の和:15763

約数の個数: 16

約数和(自身を含む): 38800080

約数和(自身を除く): 17402050

約数列:

[1, 2, 5, 10, 137, 274, 685, 1370, 15619, 31238, 78095, 156190, 2139803, 4279606, 10699015, 21398030]

約数ペア:

[(1, 21398030), (2, 10699015), (5, 4279606), (10, 2139803), (137, 156190), (274, 78095), (685, 31238), (1370, 15619)]