644912

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{2371}}^1$

素因数の和:2396

約数の個数: 20

約数和(自身を含む): 1323576

約数和(自身を除く): 678664

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 2371, 4742, 9484, 18968, 37936, 40307, 80614, 161228, 322456, 644912]

約数ペア:

[(1, 644912), (2, 322456), (4, 161228), (8, 80614), (16, 40307), (17, 37936), (34, 18968), (68, 9484), (136, 4742), (272, 2371)]