21175030

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^3\times {\mathrm{431}}^1$

素因数の和:489

約数の個数: 32

約数和(自身を含む): 40590720

約数和(自身を除く): 19415690

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 289, 431, 578, 862, 1445, 2155, 2890, 4310, 4913, 7327, 9826, 14654, 24565, 36635, 49130, 73270, 124559, 249118, 622795, 1245590, 2117503, 4235006, 10587515, 21175030]

約数ペア:

[(1, 21175030), (2, 10587515), (5, 4235006), (10, 2117503), (17, 1245590), (34, 622795), (85, 249118), (170, 124559), (289, 73270), (431, 49130), (578, 36635), (862, 24565), (1445, 14654), (2155, 9826), (2890, 7327), (4310, 4913)]