77796880

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{138923}}^1$

素因数の和:138943

約数の個数: 40

約数和(自身を含む): 206718912

約数和(自身を除く): 128922032

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 138923, 277846, 555692, 694615, 972461, 1111384, 1389230, 1944922, 2222768, 2778460, 3889844, 4862305, 5556920, 7779688, 9724610, 11113840, 15559376, 19449220, 38898440, 77796880]

約数ペア:

[(1, 77796880), (2, 38898440), (4, 19449220), (5, 15559376), (7, 11113840), (8, 9724610), (10, 7779688), (14, 5556920), (16, 4862305), (20, 3889844), (28, 2778460), (35, 2222768), (40, 1944922), (56, 1389230), (70, 1111384), (80, 972461), (112, 694615), (140, 555692), (280, 277846), (560, 138923)]