2788990

素因数分解:

$2^1\times 5^1\times {\mathrm{131}}^1\times {\mathrm{2129}}^1$

素因数の和:2267

約数の個数: 16

約数和(自身を含む): 5060880

約数和(自身を除く): 2271890

約数列:

[1, 2, 5, 10, 131, 262, 655, 1310, 2129, 4258, 10645, 21290, 278899, 557798, 1394495, 2788990]

約数ペア:

[(1, 2788990), (2, 1394495), (5, 557798), (10, 278899), (131, 21290), (262, 10645), (655, 4258), (1310, 2129)]