19972240

素因数分解:

$2^4\times 5^1\times {\mathrm{421}}^1\times {\mathrm{593}}^1$

素因数の和:1027

約数の個数: 40

約数和(自身を含む): 46624248

約数和(自身を除く): 26652008

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 421, 593, 842, 1186, 1684, 2105, 2372, 2965, 3368, 4210, 4744, 5930, 6736, 8420, 9488, 11860, 16840, 23720, 33680, 47440, 249653, 499306, 998612, 1248265, 1997224, 2496530, 3994448, 4993060, 9986120, 19972240]

約数ペア:

[(1, 19972240), (2, 9986120), (4, 4993060), (5, 3994448), (8, 2496530), (10, 1997224), (16, 1248265), (20, 998612), (40, 499306), (80, 249653), (421, 47440), (593, 33680), (842, 23720), (1186, 16840), (1684, 11860), (2105, 9488), (2372, 8420), (2965, 6736), (3368, 5930), (4210, 4744)]