27768890

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1\times {\mathrm{761}}^1$

素因数の和:898

約数の個数: 32

約数和(自身を含む): 51846480

約数和(自身を除く): 24077590

約数列:

[1, 2, 5, 10, 41, 82, 89, 178, 205, 410, 445, 761, 890, 1522, 3649, 3805, 7298, 7610, 18245, 31201, 36490, 62402, 67729, 135458, 156005, 312010, 338645, 677290, 2776889, 5553778, 13884445, 27768890]

約数ペア:

[(1, 27768890), (2, 13884445), (5, 5553778), (10, 2776889), (41, 677290), (82, 338645), (89, 312010), (178, 156005), (205, 135458), (410, 67729), (445, 62402), (761, 36490), (890, 31201), (1522, 18245), (3649, 7610), (3805, 7298)]