21218103681

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{223}}^1\times {\mathrm{72577}}^1$

素因数の和:72845

約数の個数: 32

約数和(自身を含む): 31214346240

約数和(自身を除く): 9996242559

約数列:

[1, 3, 19, 23, 57, 69, 223, 437, 669, 1311, 4237, 5129, 12711, 15387, 72577, 97451, 217731, 292353, 1378963, 1669271, 4136889, 5007813, 16184671, 31716149, 48554013, 95148447, 307508749, 372247433, 922526247, 1116742299, 7072701227, 21218103681]

約数ペア:

[(1, 21218103681), (3, 7072701227), (19, 1116742299), (23, 922526247), (57, 372247433), (69, 307508749), (223, 95148447), (437, 48554013), (669, 31716149), (1311, 16184671), (4237, 5007813), (5129, 4136889), (12711, 1669271), (15387, 1378963), (72577, 292353), (97451, 217731)]