21000907992

素因数分解:

$2^3\times 3^1\times {\mathrm{2663}}^1\times {\mathrm{328591}}^1$

素因数の和:331263

約数の個数: 32

約数和(自身を含む): 52522145280

約数和(自身を除く): 31521237288

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 2663, 5326, 7989, 10652, 15978, 21304, 31956, 63912, 328591, 657182, 985773, 1314364, 1971546, 2628728, 3943092, 7886184, 875037833, 1750075666, 2625113499, 3500151332, 5250226998, 7000302664, 10500453996, 21000907992]

約数ペア:

[(1, 21000907992), (2, 10500453996), (3, 7000302664), (4, 5250226998), (6, 3500151332), (8, 2625113499), (12, 1750075666), (24, 875037833), (2663, 7886184), (5326, 3943092), (7989, 2628728), (10652, 1971546), (15978, 1314364), (21304, 985773), (31956, 657182), (63912, 328591)]