21520576

素因数分解:

$2^6\times 7^1\times {\mathrm{11}}^2\times {\mathrm{397}}^1$

素因数の和:438

約数の個数: 84

約数和(自身を含む): 53780944

約数和(自身を除く): 32260368

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 32, 44, 56, 64, 77, 88, 112, 121, 154, 176, 224, 242, 308, 352, 397, 448, 484, 616, 704, 794, 847, 968, 1232, 1588, 1694, 1936, 2464, 2779, 3176, 3388, 3872, 4367, 4928, 5558, 6352, 6776, 7744, 8734, 11116, 12704, 13552, 17468, 22232, 25408, 27104, 30569, 34936, 44464, 48037, 54208, 61138, 69872, 88928, 96074, 122276, 139744, 177856, 192148, 244552, 279488, 336259, 384296, 489104, 672518, 768592, 978208, 1345036, 1537184, 1956416, 2690072, 3074368, 5380144, 10760288, 21520576]

約数ペア:

[(1, 21520576), (2, 10760288), (4, 5380144), (7, 3074368), (8, 2690072), (11, 1956416), (14, 1537184), (16, 1345036), (22, 978208), (28, 768592), (32, 672518), (44, 489104), (56, 384296), (64, 336259), (77, 279488), (88, 244552), (112, 192148), (121, 177856), (154, 139744), (176, 122276), (224, 96074), (242, 88928), (308, 69872), (352, 61138), (397, 54208), (448, 48037), (484, 44464), (616, 34936), (704, 30569), (794, 27104), (847, 25408), (968, 22232), (1232, 17468), (1588, 13552), (1694, 12704), (1936, 11116), (2464, 8734), (2779, 7744), (3176, 6776), (3388, 6352), (3872, 5558), (4367, 4928)]