21478616

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{157931}}^1$

素因数の和:157954

約数の個数: 16

約数和(自身を含む): 42641640

約数和(自身を除く): 21163024

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 157931, 315862, 631724, 1263448, 2684827, 5369654, 10739308, 21478616]

約数ペア:

[(1, 21478616), (2, 10739308), (4, 5369654), (8, 2684827), (17, 1263448), (34, 631724), (68, 315862), (136, 157931)]