28391049

素因数分解:

$3^2\times {\mathrm{67}}^1\times {\mathrm{197}}^1\times {\mathrm{239}}^1$

素因数の和:509

約数の個数: 24

約数和(自身を含む): 42007680

約数和(自身を除く): 13616631

約数列:

[1, 3, 9, 67, 197, 201, 239, 591, 603, 717, 1773, 2151, 13199, 16013, 39597, 47083, 48039, 118791, 141249, 144117, 423747, 3154561, 9463683, 28391049]

約数ペア:

[(1, 28391049), (3, 9463683), (9, 3154561), (67, 423747), (197, 144117), (201, 141249), (239, 118791), (591, 48039), (603, 47083), (717, 39597), (1773, 16013), (2151, 13199)]