21399616

素因数分解:

$2^6\times 7^1\times {\mathrm{37}}^1\times {\mathrm{1291}}^1$

素因数の和:1347

約数の個数: 56

約数和(自身を含む): 49881536

約数和(自身を除く): 28481920

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 37, 56, 64, 74, 112, 148, 224, 259, 296, 448, 518, 592, 1036, 1184, 1291, 2072, 2368, 2582, 4144, 5164, 8288, 9037, 10328, 16576, 18074, 20656, 36148, 41312, 47767, 72296, 82624, 95534, 144592, 191068, 289184, 334369, 382136, 578368, 668738, 764272, 1337476, 1528544, 2674952, 3057088, 5349904, 10699808, 21399616]

約数ペア:

[(1, 21399616), (2, 10699808), (4, 5349904), (7, 3057088), (8, 2674952), (14, 1528544), (16, 1337476), (28, 764272), (32, 668738), (37, 578368), (56, 382136), (64, 334369), (74, 289184), (112, 191068), (148, 144592), (224, 95534), (259, 82624), (296, 72296), (448, 47767), (518, 41312), (592, 36148), (1036, 20656), (1184, 18074), (1291, 16576), (2072, 10328), (2368, 9037), (2582, 8288), (4144, 5164)]