81208240

素因数分解:

$2^4\times 5^1\times {\mathrm{977}}^1\times {\mathrm{1039}}^1$

素因数の和:2029

約数の個数: 40

約数和(自身を含む): 189184320

約数和(自身を除く): 107976080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 977, 1039, 1954, 2078, 3908, 4156, 4885, 5195, 7816, 8312, 9770, 10390, 15632, 16624, 19540, 20780, 39080, 41560, 78160, 83120, 1015103, 2030206, 4060412, 5075515, 8120824, 10151030, 16241648, 20302060, 40604120, 81208240]

約数ペア:

[(1, 81208240), (2, 40604120), (4, 20302060), (5, 16241648), (8, 10151030), (10, 8120824), (16, 5075515), (20, 4060412), (40, 2030206), (80, 1015103), (977, 83120), (1039, 78160), (1954, 41560), (2078, 39080), (3908, 20780), (4156, 19540), (4885, 16624), (5195, 15632), (7816, 10390), (8312, 9770)]