21718648

素因数分解:

$2^3\times 7^1\times {\mathrm{389}}^1\times {\mathrm{997}}^1$

素因数の和:1399

約数の個数: 32

約数和(自身を含む): 46706400

約数和(自身を除く): 24987752

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 389, 778, 997, 1556, 1994, 2723, 3112, 3988, 5446, 6979, 7976, 10892, 13958, 21784, 27916, 55832, 387833, 775666, 1551332, 2714831, 3102664, 5429662, 10859324, 21718648]

約数ペア:

[(1, 21718648), (2, 10859324), (4, 5429662), (7, 3102664), (8, 2714831), (14, 1551332), (28, 775666), (56, 387833), (389, 55832), (778, 27916), (997, 21784), (1556, 13958), (1994, 10892), (2723, 7976), (3112, 6979), (3988, 5446)]