21784530

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1\times {\mathrm{199}}^1$

素因数の和:339

約数の個数: 64

約数和(自身を含む): 54432000

約数和(自身を除く): 32647470

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 41, 82, 89, 123, 178, 199, 205, 246, 267, 398, 410, 445, 534, 597, 615, 890, 995, 1194, 1230, 1335, 1990, 2670, 2985, 3649, 5970, 7298, 8159, 10947, 16318, 17711, 18245, 21894, 24477, 35422, 36490, 40795, 48954, 53133, 54735, 81590, 88555, 106266, 109470, 122385, 177110, 244770, 265665, 531330, 726151, 1452302, 2178453, 3630755, 4356906, 7261510, 10892265, 21784530]

約数ペア:

[(1, 21784530), (2, 10892265), (3, 7261510), (5, 4356906), (6, 3630755), (10, 2178453), (15, 1452302), (30, 726151), (41, 531330), (82, 265665), (89, 244770), (123, 177110), (178, 122385), (199, 109470), (205, 106266), (246, 88555), (267, 81590), (398, 54735), (410, 53133), (445, 48954), (534, 40795), (597, 36490), (615, 35422), (890, 24477), (995, 21894), (1194, 18245), (1230, 17711), (1335, 16318), (1990, 10947), (2670, 8159), (2985, 7298), (3649, 5970)]