21454128

素因数分解:

$2^4\times 3^2\times {\mathrm{383}}^1\times {\mathrm{389}}^1$

素因数の和:786

約数の個数: 60

約数和(自身を含む): 60353280

約数和(自身を除く): 38899152

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72, 144, 383, 389, 766, 778, 1149, 1167, 1532, 1556, 2298, 2334, 3064, 3112, 3447, 3501, 4596, 4668, 6128, 6224, 6894, 7002, 9192, 9336, 13788, 14004, 18384, 18672, 27576, 28008, 55152, 56016, 148987, 297974, 446961, 595948, 893922, 1191896, 1340883, 1787844, 2383792, 2681766, 3575688, 5363532, 7151376, 10727064, 21454128]

約数ペア:

[(1, 21454128), (2, 10727064), (3, 7151376), (4, 5363532), (6, 3575688), (8, 2681766), (9, 2383792), (12, 1787844), (16, 1340883), (18, 1191896), (24, 893922), (36, 595948), (48, 446961), (72, 297974), (144, 148987), (383, 56016), (389, 55152), (766, 28008), (778, 27576), (1149, 18672), (1167, 18384), (1532, 14004), (1556, 13788), (2298, 9336), (2334, 9192), (3064, 7002), (3112, 6894), (3447, 6224), (3501, 6128), (4596, 4668)]