21221408

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{367}}^1$

素因数の和:529

約数の個数: 48

約数和(自身を含む): 45440640

約数和(自身を除く): 24219232

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 104, 139, 208, 278, 367, 416, 556, 734, 1112, 1468, 1807, 2224, 2936, 3614, 4448, 4771, 5872, 7228, 9542, 11744, 14456, 19084, 28912, 38168, 51013, 57824, 76336, 102026, 152672, 204052, 408104, 663169, 816208, 1326338, 1632416, 2652676, 5305352, 10610704, 21221408]

約数ペア:

[(1, 21221408), (2, 10610704), (4, 5305352), (8, 2652676), (13, 1632416), (16, 1326338), (26, 816208), (32, 663169), (52, 408104), (104, 204052), (139, 152672), (208, 102026), (278, 76336), (367, 57824), (416, 51013), (556, 38168), (734, 28912), (1112, 19084), (1468, 14456), (1807, 11744), (2224, 9542), (2936, 7228), (3614, 5872), (4448, 4771)]