21504574

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{61}}^1\times {\mathrm{149}}^1$

素因数の和:245

約数の個数: 48

約数和(自身を含む): 40845600

約数和(自身を除く): 19341026

約数列:

[1, 2, 7, 13, 14, 26, 61, 91, 122, 149, 169, 182, 298, 338, 427, 793, 854, 1043, 1183, 1586, 1937, 2086, 2366, 3874, 5551, 9089, 10309, 11102, 13559, 18178, 20618, 25181, 27118, 50362, 63623, 72163, 118157, 127246, 144326, 176267, 236314, 352534, 827099, 1536041, 1654198, 3072082, 10752287, 21504574]

約数ペア:

[(1, 21504574), (2, 10752287), (7, 3072082), (13, 1654198), (14, 1536041), (26, 827099), (61, 352534), (91, 236314), (122, 176267), (149, 144326), (169, 127246), (182, 118157), (298, 72163), (338, 63623), (427, 50362), (793, 27118), (854, 25181), (1043, 20618), (1183, 18178), (1586, 13559), (1937, 11102), (2086, 10309), (2366, 9089), (3874, 5551)]