21302608

素因数分解:

$2^4\times {\mathrm{53}}^1\times {\mathrm{25121}}^1$

素因数の和:25182

約数の個数: 20

約数和(自身を含む): 42054228

約数和(自身を除く): 20751620

約数列:

[1, 2, 4, 8, 16, 53, 106, 212, 424, 848, 25121, 50242, 100484, 200968, 401936, 1331413, 2662826, 5325652, 10651304, 21302608]

約数ペア:

[(1, 21302608), (2, 10651304), (4, 5325652), (8, 2662826), (16, 1331413), (53, 401936), (106, 200968), (212, 100484), (424, 50242), (848, 25121)]