218428

素因数分解:

$2^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{269}}^1$

素因数の和:309

約数の個数: 24

約数和(自身を含む): 453600

約数和(自身を除く): 235172

約数列:

[1, 2, 4, 7, 14, 28, 29, 58, 116, 203, 269, 406, 538, 812, 1076, 1883, 3766, 7532, 7801, 15602, 31204, 54607, 109214, 218428]

約数ペア:

[(1, 218428), (2, 109214), (4, 54607), (7, 31204), (14, 15602), (28, 7801), (29, 7532), (58, 3766), (116, 1883), (203, 1076), (269, 812), (406, 538)]