639090255

素因数分解:

$3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{31259}}^1$

素因数の和:31343

約数の個数: 32

約数和(自身を含む): 1080345600

約数和(自身を除く): 441255345

約数列:

[1, 3, 5, 15, 29, 47, 87, 141, 145, 235, 435, 705, 1363, 4089, 6815, 20445, 31259, 93777, 156295, 468885, 906511, 1469173, 2719533, 4407519, 4532555, 7345865, 13597665, 22037595, 42606017, 127818051, 213030085, 639090255]

約数ペア:

[(1, 639090255), (3, 213030085), (5, 127818051), (15, 42606017), (29, 22037595), (47, 13597665), (87, 7345865), (141, 4532555), (145, 4407519), (235, 2719533), (435, 1469173), (705, 906511), (1363, 468885), (4089, 156295), (6815, 93777), (20445, 31259)]