1229980

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{691}}^1$

素因数の和:789

約数の個数: 24

約数和(自身を含む): 2615760

約数和(自身を除く): 1385780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 691, 890, 1382, 1780, 2764, 3455, 6910, 13820, 61499, 122998, 245996, 307495, 614990, 1229980]

約数ペア:

[(1, 1229980), (2, 614990), (4, 307495), (5, 245996), (10, 122998), (20, 61499), (89, 13820), (178, 6910), (356, 3455), (445, 2764), (691, 1780), (890, 1382)]