20669535

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{659}}^1$

素因数の和:728

約数の個数: 48

約数和(自身を含む): 38918880

約数和(自身を除く): 18249345

約数列:

[1, 3, 5, 9, 15, 17, 41, 45, 51, 85, 123, 153, 205, 255, 369, 615, 659, 697, 765, 1845, 1977, 2091, 3295, 3485, 5931, 6273, 9885, 10455, 11203, 27019, 29655, 31365, 33609, 56015, 81057, 100827, 135095, 168045, 243171, 405285, 459323, 504135, 1215855, 1377969, 2296615, 4133907, 6889845, 20669535]

約数ペア:

[(1, 20669535), (3, 6889845), (5, 4133907), (9, 2296615), (15, 1377969), (17, 1215855), (41, 504135), (45, 459323), (51, 405285), (85, 243171), (123, 168045), (153, 135095), (205, 100827), (255, 81057), (369, 56015), (615, 33609), (659, 31365), (697, 29655), (765, 27019), (1845, 11203), (1977, 10455), (2091, 9885), (3295, 6273), (3485, 5931)]