28145678

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{487}}^1$

素因数の和:608

約数の個数: 32

約数和(自身を含む): 48066048

約数和(自身を除く): 19920370

約数列:

[1, 2, 11, 22, 37, 71, 74, 142, 407, 487, 781, 814, 974, 1562, 2627, 5254, 5357, 10714, 18019, 28897, 34577, 36038, 57794, 69154, 198209, 380347, 396418, 760694, 1279349, 2558698, 14072839, 28145678]

約数ペア:

[(1, 28145678), (2, 14072839), (11, 2558698), (22, 1279349), (37, 760694), (71, 396418), (74, 380347), (142, 198209), (407, 69154), (487, 57794), (781, 36038), (814, 34577), (974, 28897), (1562, 18019), (2627, 10714), (5254, 5357)]