21087216

素因数分解:

$2^4\times 3^4\times {\mathrm{53}}^1\times {\mathrm{307}}^1$

素因数の和:380

約数の個数: 100

約数和(自身を含む): 62386632

約数和(自身を除く): 41299416

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 27, 36, 48, 53, 54, 72, 81, 106, 108, 144, 159, 162, 212, 216, 307, 318, 324, 424, 432, 477, 614, 636, 648, 848, 921, 954, 1228, 1272, 1296, 1431, 1842, 1908, 2456, 2544, 2763, 2862, 3684, 3816, 4293, 4912, 5526, 5724, 7368, 7632, 8289, 8586, 11052, 11448, 14736, 16271, 16578, 17172, 22104, 22896, 24867, 32542, 33156, 34344, 44208, 48813, 49734, 65084, 66312, 68688, 97626, 99468, 130168, 132624, 146439, 195252, 198936, 260336, 292878, 390504, 397872, 439317, 585756, 781008, 878634, 1171512, 1317951, 1757268, 2343024, 2635902, 3514536, 5271804, 7029072, 10543608, 21087216]

約数ペア:

[(1, 21087216), (2, 10543608), (3, 7029072), (4, 5271804), (6, 3514536), (8, 2635902), (9, 2343024), (12, 1757268), (16, 1317951), (18, 1171512), (24, 878634), (27, 781008), (36, 585756), (48, 439317), (53, 397872), (54, 390504), (72, 292878), (81, 260336), (106, 198936), (108, 195252), (144, 146439), (159, 132624), (162, 130168), (212, 99468), (216, 97626), (307, 68688), (318, 66312), (324, 65084), (424, 49734), (432, 48813), (477, 44208), (614, 34344), (636, 33156), (648, 32542), (848, 24867), (921, 22896), (954, 22104), (1228, 17172), (1272, 16578), (1296, 16271), (1431, 14736), (1842, 11448), (1908, 11052), (2456, 8586), (2544, 8289), (2763, 7632), (2862, 7368), (3684, 5724), (3816, 5526), (4293, 4912)]