28723191

素因数分解:

$3^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{131}}^1\times {\mathrm{197}}^1$

素因数の和:391

約数の個数: 32

約数和(自身を含む): 45163008

約数和(自身を除く): 16439817

約数列:

[1, 3, 7, 21, 53, 131, 159, 197, 371, 393, 591, 917, 1113, 1379, 2751, 4137, 6943, 10441, 20829, 25807, 31323, 48601, 73087, 77421, 145803, 180649, 219261, 541947, 1367771, 4103313, 9574397, 28723191]

約数ペア:

[(1, 28723191), (3, 9574397), (7, 4103313), (21, 1367771), (53, 541947), (131, 219261), (159, 180649), (197, 145803), (371, 77421), (393, 73087), (591, 48601), (917, 31323), (1113, 25807), (1379, 20829), (2751, 10441), (4137, 6943)]