21617816

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{167}}^1\times {\mathrm{1471}}^1$

素因数の和:1655

約数の個数: 32

約数和(自身を含む): 44513280

約数和(自身を除く): 22895464

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 167, 334, 668, 1336, 1471, 1837, 2942, 3674, 5884, 7348, 11768, 14696, 16181, 32362, 64724, 129448, 245657, 491314, 982628, 1965256, 2702227, 5404454, 10808908, 21617816]

約数ペア:

[(1, 21617816), (2, 10808908), (4, 5404454), (8, 2702227), (11, 1965256), (22, 982628), (44, 491314), (88, 245657), (167, 129448), (334, 64724), (668, 32362), (1336, 16181), (1471, 14696), (1837, 11768), (2942, 7348), (3674, 5884)]