202117640

素因数分解:

$2^3\times 5^1\times {\mathrm{1987}}^1\times {\mathrm{2543}}^1$

素因数の和:4541

約数の個数: 32

約数和(自身を含む): 455172480

約数和(自身を除く): 253054840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1987, 2543, 3974, 5086, 7948, 9935, 10172, 12715, 15896, 19870, 20344, 25430, 39740, 50860, 79480, 101720, 5052941, 10105882, 20211764, 25264705, 40423528, 50529410, 101058820, 202117640]

約数ペア:

[(1, 202117640), (2, 101058820), (4, 50529410), (5, 40423528), (8, 25264705), (10, 20211764), (20, 10105882), (40, 5052941), (1987, 101720), (2543, 79480), (3974, 50860), (5086, 39740), (7948, 25430), (9935, 20344), (10172, 19870), (12715, 15896)]