16581980

素因数分解:

$2^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{6329}}^1$

素因数の和:6469

約数の個数: 24

約数和(自身を含む): 35093520

約数和(自身を除く): 18511540

約数列:

[1, 2, 4, 5, 10, 20, 131, 262, 524, 655, 1310, 2620, 6329, 12658, 25316, 31645, 63290, 126580, 829099, 1658198, 3316396, 4145495, 8290990, 16581980]

約数ペア:

[(1, 16581980), (2, 8290990), (4, 4145495), (5, 3316396), (10, 1658198), (20, 829099), (131, 126580), (262, 63290), (524, 31645), (655, 25316), (1310, 12658), (2620, 6329)]