21060056

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{349}}^1\times {\mathrm{397}}^1$

素因数の和:771

約数の個数: 32

約数和(自身を含む): 41790000

約数和(自身を除く): 20729944

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 349, 397, 698, 794, 1396, 1588, 2792, 3176, 6631, 7543, 13262, 15086, 26524, 30172, 53048, 60344, 138553, 277106, 554212, 1108424, 2632507, 5265014, 10530028, 21060056]

約数ペア:

[(1, 21060056), (2, 10530028), (4, 5265014), (8, 2632507), (19, 1108424), (38, 554212), (76, 277106), (152, 138553), (349, 60344), (397, 53048), (698, 30172), (794, 26524), (1396, 15086), (1588, 13262), (2792, 7543), (3176, 6631)]