28689830

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{199}}^1\times {\mathrm{1109}}^1$

素因数の和:1328

約数の個数: 32

約数和(自身を含む): 55944000

約数和(自身を除く): 27254170

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 199, 398, 995, 1109, 1990, 2218, 2587, 5174, 5545, 11090, 12935, 14417, 25870, 28834, 72085, 144170, 220691, 441382, 1103455, 2206910, 2868983, 5737966, 14344915, 28689830]

約数ペア:

[(1, 28689830), (2, 14344915), (5, 5737966), (10, 2868983), (13, 2206910), (26, 1103455), (65, 441382), (130, 220691), (199, 144170), (398, 72085), (995, 28834), (1109, 25870), (1990, 14417), (2218, 12935), (2587, 11090), (5174, 5545)]