21706448

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{107}}^1\times {\mathrm{409}}^1$

素因数の和:555

約数の個数: 40

約数和(自身を含む): 43925760

約数和(自身を除く): 22219312

約数列:

[1, 2, 4, 8, 16, 31, 62, 107, 124, 214, 248, 409, 428, 496, 818, 856, 1636, 1712, 3272, 3317, 6544, 6634, 12679, 13268, 25358, 26536, 43763, 50716, 53072, 87526, 101432, 175052, 202864, 350104, 700208, 1356653, 2713306, 5426612, 10853224, 21706448]

約数ペア:

[(1, 21706448), (2, 10853224), (4, 5426612), (8, 2713306), (16, 1356653), (31, 700208), (62, 350104), (107, 202864), (124, 175052), (214, 101432), (248, 87526), (409, 53072), (428, 50716), (496, 43763), (818, 26536), (856, 25358), (1636, 13268), (1712, 12679), (3272, 6634), (3317, 6544)]