78636880

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{140423}}^1$

素因数の和:140443

約数の個数: 40

約数和(自身を含む): 208950912

約数和(自身を除く): 130314032

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 140423, 280846, 561692, 702115, 982961, 1123384, 1404230, 1965922, 2246768, 2808460, 3931844, 4914805, 5616920, 7863688, 9829610, 11233840, 15727376, 19659220, 39318440, 78636880]

約数ペア:

[(1, 78636880), (2, 39318440), (4, 19659220), (5, 15727376), (7, 11233840), (8, 9829610), (10, 7863688), (14, 5616920), (16, 4914805), (20, 3931844), (28, 2808460), (35, 2246768), (40, 1965922), (56, 1404230), (70, 1123384), (80, 982961), (112, 702115), (140, 561692), (280, 280846), (560, 140423)]