21291244820

素因数分解:

$2^2\times 5^1\times {\mathrm{199}}^1\times {\mathrm{1447}}^1\times {\mathrm{3697}}^1$

素因数の和:5352

約数の個数: 48

約数和(自身を含む): 44979513600

約数和(自身を除く): 23688268780

約数列:

[1, 2, 4, 5, 10, 20, 199, 398, 796, 995, 1447, 1990, 2894, 3697, 3980, 5788, 7235, 7394, 14470, 14788, 18485, 28940, 36970, 73940, 287953, 575906, 735703, 1151812, 1439765, 1471406, 2879530, 2942812, 3678515, 5349559, 5759060, 7357030, 10699118, 14714060, 21398236, 26747795, 53495590, 106991180, 1064562241, 2129124482, 4258248964, 5322811205, 10645622410, 21291244820]

約数ペア:

[(1, 21291244820), (2, 10645622410), (4, 5322811205), (5, 4258248964), (10, 2129124482), (20, 1064562241), (199, 106991180), (398, 53495590), (796, 26747795), (995, 21398236), (1447, 14714060), (1990, 10699118), (2894, 7357030), (3697, 5759060), (3980, 5349559), (5788, 3678515), (7235, 2942812), (7394, 2879530), (14470, 1471406), (14788, 1439765), (18485, 1151812), (28940, 735703), (36970, 575906), (73940, 287953)]