21043690

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{107}}^1\times {\mathrm{277}}^1$

素因数の和:462

約数の個数: 32

約数和(自身を含む): 38911104

約数和(自身を除く): 17867414

約数列:

[1, 2, 5, 10, 71, 107, 142, 214, 277, 355, 535, 554, 710, 1070, 1385, 2770, 7597, 15194, 19667, 29639, 37985, 39334, 59278, 75970, 98335, 148195, 196670, 296390, 2104369, 4208738, 10521845, 21043690]

約数ペア:

[(1, 21043690), (2, 10521845), (5, 4208738), (10, 2104369), (71, 296390), (107, 196670), (142, 148195), (214, 98335), (277, 75970), (355, 59278), (535, 39334), (554, 37985), (710, 29639), (1070, 19667), (1385, 15194), (2770, 7597)]