21784672

素因数分解:

$2^5\times 7^1\times {\mathrm{13}}^1\times {\mathrm{7481}}^1$

素因数の和:7511

約数の個数: 48

約数和(自身を含む): 52792992

約数和(自身を除く): 31008320

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 32, 52, 56, 91, 104, 112, 182, 208, 224, 364, 416, 728, 1456, 2912, 7481, 14962, 29924, 52367, 59848, 97253, 104734, 119696, 194506, 209468, 239392, 389012, 418936, 680771, 778024, 837872, 1361542, 1556048, 1675744, 2723084, 3112096, 5446168, 10892336, 21784672]

約数ペア:

[(1, 21784672), (2, 10892336), (4, 5446168), (7, 3112096), (8, 2723084), (13, 1675744), (14, 1556048), (16, 1361542), (26, 837872), (28, 778024), (32, 680771), (52, 418936), (56, 389012), (91, 239392), (104, 209468), (112, 194506), (182, 119696), (208, 104734), (224, 97253), (364, 59848), (416, 52367), (728, 29924), (1456, 14962), (2912, 7481)]