21739916

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{6959}}^1$

素因数の和:7045

約数の個数: 24

約数和(自身を含む): 42094080

約数和(自身を除く): 20354164

約数列:

[1, 2, 4, 11, 22, 44, 71, 142, 284, 781, 1562, 3124, 6959, 13918, 27836, 76549, 153098, 306196, 494089, 988178, 1976356, 5434979, 10869958, 21739916]

約数ペア:

[(1, 21739916), (2, 10869958), (4, 5434979), (11, 1976356), (22, 988178), (44, 494089), (71, 306196), (142, 153098), (284, 76549), (781, 27836), (1562, 13918), (3124, 6959)]