21404124

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{157}}^1\times {\mathrm{541}}^1$

素因数の和:715

約数の個数: 72

約数和(自身を含む): 62343008

約数和(自身を除く): 40938884

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 157, 252, 314, 471, 541, 628, 942, 1082, 1099, 1413, 1623, 1884, 2164, 2198, 2826, 3246, 3297, 3787, 4396, 4869, 5652, 6492, 6594, 7574, 9738, 9891, 11361, 13188, 15148, 19476, 19782, 22722, 34083, 39564, 45444, 68166, 84937, 136332, 169874, 254811, 339748, 509622, 594559, 764433, 1019244, 1189118, 1528866, 1783677, 2378236, 3057732, 3567354, 5351031, 7134708, 10702062, 21404124]

約数ペア:

[(1, 21404124), (2, 10702062), (3, 7134708), (4, 5351031), (6, 3567354), (7, 3057732), (9, 2378236), (12, 1783677), (14, 1528866), (18, 1189118), (21, 1019244), (28, 764433), (36, 594559), (42, 509622), (63, 339748), (84, 254811), (126, 169874), (157, 136332), (252, 84937), (314, 68166), (471, 45444), (541, 39564), (628, 34083), (942, 22722), (1082, 19782), (1099, 19476), (1413, 15148), (1623, 13188), (1884, 11361), (2164, 9891), (2198, 9738), (2826, 7574), (3246, 6594), (3297, 6492), (3787, 5652), (4396, 4869)]