256804

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{109}}^1$

素因数の和:163

約数の個数: 24

約数和(自身を含む): 492800

約数和(自身を除く): 235996

約数列:

[1, 2, 4, 19, 31, 38, 62, 76, 109, 124, 218, 436, 589, 1178, 2071, 2356, 3379, 4142, 6758, 8284, 13516, 64201, 128402, 256804]

約数ペア:

[(1, 256804), (2, 128402), (4, 64201), (19, 13516), (31, 8284), (38, 6758), (62, 4142), (76, 3379), (109, 2356), (124, 2071), (218, 1178), (436, 589)]