18972130

素因数分解:

$2^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{21317}}^1$

素因数の和:21413

約数の個数: 16

約数和(自身を含む): 34535160

約数和(自身を除く): 15563030

約数列:

[1, 2, 5, 10, 89, 178, 445, 890, 21317, 42634, 106585, 213170, 1897213, 3794426, 9486065, 18972130]

約数ペア:

[(1, 18972130), (2, 9486065), (5, 3794426), (10, 1897213), (89, 213170), (178, 106585), (445, 42634), (890, 21317)]