628580020

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{17827}}^1$

素因数の和:17920

約数の個数: 48

約数和(自身を含む): 1383738048

約数和(自身を除く): 755158028

約数列:

[1, 2, 4, 5, 10, 20, 41, 43, 82, 86, 164, 172, 205, 215, 410, 430, 820, 860, 1763, 3526, 7052, 8815, 17630, 17827, 35260, 35654, 71308, 89135, 178270, 356540, 730907, 766561, 1461814, 1533122, 2923628, 3066244, 3654535, 3832805, 7309070, 7665610, 14618140, 15331220, 31429001, 62858002, 125716004, 157145005, 314290010, 628580020]

約数ペア:

[(1, 628580020), (2, 314290010), (4, 157145005), (5, 125716004), (10, 62858002), (20, 31429001), (41, 15331220), (43, 14618140), (82, 7665610), (86, 7309070), (164, 3832805), (172, 3654535), (205, 3066244), (215, 2923628), (410, 1533122), (430, 1461814), (820, 766561), (860, 730907), (1763, 356540), (3526, 178270), (7052, 89135), (8815, 71308), (17630, 35654), (17827, 35260)]