21553649

素因数分解:

${\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{677}}^1$

素因数の和:800

約数の個数: 16

約数和(自身を含む): 24299520

約数和(自身を除く): 2745871

約数列:

[1, 13, 31, 79, 403, 677, 1027, 2449, 8801, 20987, 31837, 53483, 272831, 695279, 1657973, 21553649]

約数ペア:

[(1, 21553649), (13, 1657973), (31, 695279), (79, 272831), (403, 53483), (677, 31837), (1027, 20987), (2449, 8801)]