21519384

素因数分解:

$2^3\times 3^1\times {\mathrm{521}}^1\times {\mathrm{1721}}^1$

素因数の和:2251

約数の個数: 32

約数和(自身を含む): 53933040

約数和(自身を除く): 32413656

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 521, 1042, 1563, 1721, 2084, 3126, 3442, 4168, 5163, 6252, 6884, 10326, 12504, 13768, 20652, 41304, 896641, 1793282, 2689923, 3586564, 5379846, 7173128, 10759692, 21519384]

約数ペア:

[(1, 21519384), (2, 10759692), (3, 7173128), (4, 5379846), (6, 3586564), (8, 2689923), (12, 1793282), (24, 896641), (521, 41304), (1042, 20652), (1563, 13768), (1721, 12504), (2084, 10326), (3126, 6884), (3442, 6252), (4168, 5163)]