8004020

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{227}}^1$

素因数の和:320

約数の個数: 48

約数和(自身を含む): 17696448

約数和(自身を除く): 9692428

約数列:

[1, 2, 4, 5, 10, 20, 41, 43, 82, 86, 164, 172, 205, 215, 227, 410, 430, 454, 820, 860, 908, 1135, 1763, 2270, 3526, 4540, 7052, 8815, 9307, 9761, 17630, 18614, 19522, 35260, 37228, 39044, 46535, 48805, 93070, 97610, 186140, 195220, 400201, 800402, 1600804, 2001005, 4002010, 8004020]

約数ペア:

[(1, 8004020), (2, 4002010), (4, 2001005), (5, 1600804), (10, 800402), (20, 400201), (41, 195220), (43, 186140), (82, 97610), (86, 93070), (164, 48805), (172, 46535), (205, 39044), (215, 37228), (227, 35260), (410, 19522), (430, 18614), (454, 17630), (820, 9761), (860, 9307), (908, 8815), (1135, 7052), (1763, 4540), (2270, 3526)]