21653008

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{5479}}^1$

素因数の和:5519

約数の個数: 40

約数和(自身を含む): 47566400

約数和(自身を除く): 25913392

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 38, 52, 76, 104, 152, 208, 247, 304, 494, 988, 1976, 3952, 5479, 10958, 21916, 43832, 71227, 87664, 104101, 142454, 208202, 284908, 416404, 569816, 832808, 1139632, 1353313, 1665616, 2706626, 5413252, 10826504, 21653008]

約数ペア:

[(1, 21653008), (2, 10826504), (4, 5413252), (8, 2706626), (13, 1665616), (16, 1353313), (19, 1139632), (26, 832808), (38, 569816), (52, 416404), (76, 284908), (104, 208202), (152, 142454), (208, 104101), (247, 87664), (304, 71227), (494, 43832), (988, 21916), (1976, 10958), (3952, 5479)]