27642920

素因数分解:

$2^3\times 5^1\times {\mathrm{257}}^1\times {\mathrm{2689}}^1$

素因数の和:2957

約数の個数: 32

約数和(自身を含む): 62461800

約数和(自身を除く): 34818880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 257, 514, 1028, 1285, 2056, 2570, 2689, 5140, 5378, 10280, 10756, 13445, 21512, 26890, 53780, 107560, 691073, 1382146, 2764292, 3455365, 5528584, 6910730, 13821460, 27642920]

約数ペア:

[(1, 27642920), (2, 13821460), (4, 6910730), (5, 5528584), (8, 3455365), (10, 2764292), (20, 1382146), (40, 691073), (257, 107560), (514, 53780), (1028, 26890), (1285, 21512), (2056, 13445), (2570, 10756), (2689, 10280), (5140, 5378)]