19427120

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{12781}}^1$

素因数の和:12813

約数の個数: 40

約数和(自身を含む): 47549040

約数和(自身を除く): 28121920

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 12781, 25562, 51124, 63905, 102248, 127810, 204496, 242839, 255620, 485678, 511240, 971356, 1022480, 1214195, 1942712, 2428390, 3885424, 4856780, 9713560, 19427120]

約数ペア:

[(1, 19427120), (2, 9713560), (4, 4856780), (5, 3885424), (8, 2428390), (10, 1942712), (16, 1214195), (19, 1022480), (20, 971356), (38, 511240), (40, 485678), (76, 255620), (80, 242839), (95, 204496), (152, 127810), (190, 102248), (304, 63905), (380, 51124), (760, 25562), (1520, 12781)]