28471990

素因数分解:

$2^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{31991}}^1$

素因数の和:32087

約数の個数: 16

約数和(自身を含む): 51827040

約数和(自身を除く): 23355050

約数列:

[1, 2, 5, 10, 89, 178, 445, 890, 31991, 63982, 159955, 319910, 2847199, 5694398, 14235995, 28471990]

約数ペア:

[(1, 28471990), (2, 14235995), (5, 5694398), (10, 2847199), (89, 319910), (178, 159955), (445, 63982), (890, 31991)]