21415892

素因数分解:

$2^2\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{1399}}^1$

素因数の和:1535

約数の個数: 24

約数和(自身を含む): 38808000

約数和(自身を除く): 17392108

約数列:

[1, 2, 4, 43, 86, 89, 172, 178, 356, 1399, 2798, 3827, 5596, 7654, 15308, 60157, 120314, 124511, 240628, 249022, 498044, 5353973, 10707946, 21415892]

約数ペア:

[(1, 21415892), (2, 10707946), (4, 5353973), (43, 498044), (86, 249022), (89, 240628), (172, 124511), (178, 120314), (356, 60157), (1399, 15308), (2798, 7654), (3827, 5596)]