21042252

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{7591}}^1$

素因数の和:7619

約数の個数: 72

約数和(自身を含む): 66323712

約数和(自身を除く): 45281460

約数列:

[1, 2, 3, 4, 6, 7, 9, 11, 12, 14, 18, 21, 22, 28, 33, 36, 42, 44, 63, 66, 77, 84, 99, 126, 132, 154, 198, 231, 252, 308, 396, 462, 693, 924, 1386, 2772, 7591, 15182, 22773, 30364, 45546, 53137, 68319, 83501, 91092, 106274, 136638, 159411, 167002, 212548, 250503, 273276, 318822, 334004, 478233, 501006, 584507, 637644, 751509, 956466, 1002012, 1169014, 1503018, 1753521, 1912932, 2338028, 3006036, 3507042, 5260563, 7014084, 10521126, 21042252]

約数ペア:

[(1, 21042252), (2, 10521126), (3, 7014084), (4, 5260563), (6, 3507042), (7, 3006036), (9, 2338028), (11, 1912932), (12, 1753521), (14, 1503018), (18, 1169014), (21, 1002012), (22, 956466), (28, 751509), (33, 637644), (36, 584507), (42, 501006), (44, 478233), (63, 334004), (66, 318822), (77, 273276), (84, 250503), (99, 212548), (126, 167002), (132, 159411), (154, 136638), (198, 106274), (231, 91092), (252, 83501), (308, 68319), (396, 53137), (462, 45546), (693, 30364), (924, 22773), (1386, 15182), (2772, 7591)]