77456560

素因数分解:

$2^4\times 5^1\times {\mathrm{977}}^1\times {\mathrm{991}}^1$

素因数の和:1981

約数の個数: 40

約数和(自身を含む): 180452736

約数和(自身を除く): 102996176

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 977, 991, 1954, 1982, 3908, 3964, 4885, 4955, 7816, 7928, 9770, 9910, 15632, 15856, 19540, 19820, 39080, 39640, 78160, 79280, 968207, 1936414, 3872828, 4841035, 7745656, 9682070, 15491312, 19364140, 38728280, 77456560]

約数ペア:

[(1, 77456560), (2, 38728280), (4, 19364140), (5, 15491312), (8, 9682070), (10, 7745656), (16, 4841035), (20, 3872828), (40, 1936414), (80, 968207), (977, 79280), (991, 78160), (1954, 39640), (1982, 39080), (3908, 19820), (3964, 19540), (4885, 15856), (4955, 15632), (7816, 9910), (7928, 9770)]