20721976

素因数分解:

$2^3\times {\mathrm{11}}^2\times {\mathrm{21407}}^1$

素因数の和:21435

約数の個数: 24

約数和(自身を含む): 42708960

約数和(自身を除く): 21986984

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 121, 242, 484, 968, 21407, 42814, 85628, 171256, 235477, 470954, 941908, 1883816, 2590247, 5180494, 10360988, 20721976]

約数ペア:

[(1, 20721976), (2, 10360988), (4, 5180494), (8, 2590247), (11, 1883816), (22, 941908), (44, 470954), (88, 235477), (121, 171256), (242, 85628), (484, 42814), (968, 21407)]