20977656

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{89}}^1$

素因数の和:189

約数の個数: 128

約数和(自身を含む): 64281600

約数和(自身を除く): 43303944

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 23, 24, 28, 42, 46, 56, 61, 69, 84, 89, 92, 122, 138, 161, 168, 178, 183, 184, 244, 267, 276, 322, 356, 366, 427, 483, 488, 534, 552, 623, 644, 712, 732, 854, 966, 1068, 1246, 1281, 1288, 1403, 1464, 1708, 1869, 1932, 2047, 2136, 2492, 2562, 2806, 3416, 3738, 3864, 4094, 4209, 4984, 5124, 5429, 5612, 6141, 7476, 8188, 8418, 9821, 10248, 10858, 11224, 12282, 14329, 14952, 16287, 16376, 16836, 19642, 21716, 24564, 28658, 29463, 32574, 33672, 38003, 39284, 42987, 43432, 49128, 57316, 58926, 65148, 76006, 78568, 85974, 114009, 114632, 117852, 124867, 130296, 152012, 171948, 228018, 235704, 249734, 304024, 343896, 374601, 456036, 499468, 749202, 874069, 912072, 998936, 1498404, 1748138, 2622207, 2996808, 3496276, 5244414, 6992552, 10488828, 20977656]

約数ペア:

[(1, 20977656), (2, 10488828), (3, 6992552), (4, 5244414), (6, 3496276), (7, 2996808), (8, 2622207), (12, 1748138), (14, 1498404), (21, 998936), (23, 912072), (24, 874069), (28, 749202), (42, 499468), (46, 456036), (56, 374601), (61, 343896), (69, 304024), (84, 249734), (89, 235704), (92, 228018), (122, 171948), (138, 152012), (161, 130296), (168, 124867), (178, 117852), (183, 114632), (184, 114009), (244, 85974), (267, 78568), (276, 76006), (322, 65148), (356, 58926), (366, 57316), (427, 49128), (483, 43432), (488, 42987), (534, 39284), (552, 38003), (623, 33672), (644, 32574), (712, 29463), (732, 28658), (854, 24564), (966, 21716), (1068, 19642), (1246, 16836), (1281, 16376), (1288, 16287), (1403, 14952), (1464, 14329), (1708, 12282), (1869, 11224), (1932, 10858), (2047, 10248), (2136, 9821), (2492, 8418), (2562, 8188), (2806, 7476), (3416, 6141), (3738, 5612), (3864, 5429), (4094, 5124), (4209, 4984)]