77889520

素因数分解:

$2^4\times 5^1\times {\mathrm{691}}^1\times {\mathrm{1409}}^1$

素因数の和:2113

約数の個数: 40

約数和(自身を含む): 181483920

約数和(自身を除く): 103594400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 691, 1382, 1409, 2764, 2818, 3455, 5528, 5636, 6910, 7045, 11056, 11272, 13820, 14090, 22544, 27640, 28180, 55280, 56360, 112720, 973619, 1947238, 3894476, 4868095, 7788952, 9736190, 15577904, 19472380, 38944760, 77889520]

約数ペア:

[(1, 77889520), (2, 38944760), (4, 19472380), (5, 15577904), (8, 9736190), (10, 7788952), (16, 4868095), (20, 3894476), (40, 1947238), (80, 973619), (691, 112720), (1382, 56360), (1409, 55280), (2764, 28180), (2818, 27640), (3455, 22544), (5528, 14090), (5636, 13820), (6910, 11272), (7045, 11056)]