21684212

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{73}}^1\times {\mathrm{157}}^1$

素因数の和:288

約数の個数: 48

約数和(自身を含む): 43213632

約数和(自身を除く): 21529420

約数列:

[1, 2, 4, 11, 22, 43, 44, 73, 86, 146, 157, 172, 292, 314, 473, 628, 803, 946, 1606, 1727, 1892, 3139, 3212, 3454, 6278, 6751, 6908, 11461, 12556, 13502, 22922, 27004, 34529, 45844, 69058, 74261, 126071, 138116, 148522, 252142, 297044, 492823, 504284, 985646, 1971292, 5421053, 10842106, 21684212]

約数ペア:

[(1, 21684212), (2, 10842106), (4, 5421053), (11, 1971292), (22, 985646), (43, 504284), (44, 492823), (73, 297044), (86, 252142), (146, 148522), (157, 138116), (172, 126071), (292, 74261), (314, 69058), (473, 45844), (628, 34529), (803, 27004), (946, 22922), (1606, 13502), (1727, 12556), (1892, 11461), (3139, 6908), (3212, 6751), (3454, 6278)]