89240020

素因数分解:

$2^2\times 5^1\times {\mathrm{641}}^1\times {\mathrm{6961}}^1$

素因数の和:7611

約数の個数: 24

約数和(自身を含む): 187723368

約数和(自身を除く): 98483348

約数列:

[1, 2, 4, 5, 10, 20, 641, 1282, 2564, 3205, 6410, 6961, 12820, 13922, 27844, 34805, 69610, 139220, 4462001, 8924002, 17848004, 22310005, 44620010, 89240020]

約数ペア:

[(1, 89240020), (2, 44620010), (4, 22310005), (5, 17848004), (10, 8924002), (20, 4462001), (641, 139220), (1282, 69610), (2564, 34805), (3205, 27844), (6410, 13922), (6961, 12820)]