19991484

素因数分解:

$2^2\times 3^2\times {\mathrm{509}}^1\times {\mathrm{1091}}^1$

素因数の和:1610

約数の個数: 36

約数和(自身を含む): 50679720

約数和(自身を除く): 30688236

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 509, 1018, 1091, 1527, 2036, 2182, 3054, 3273, 4364, 4581, 6108, 6546, 9162, 9819, 13092, 18324, 19638, 39276, 555319, 1110638, 1665957, 2221276, 3331914, 4997871, 6663828, 9995742, 19991484]

約数ペア:

[(1, 19991484), (2, 9995742), (3, 6663828), (4, 4997871), (6, 3331914), (9, 2221276), (12, 1665957), (18, 1110638), (36, 555319), (509, 39276), (1018, 19638), (1091, 18324), (1527, 13092), (2036, 9819), (2182, 9162), (3054, 6546), (3273, 6108), (4364, 4581)]