397978

素因数分解:

$2^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{131}}^1$

素因数の和:178

約数の個数: 24

約数和(自身を含む): 722304

約数和(自身を除く): 324326

約数列:

[1, 2, 7, 14, 31, 49, 62, 98, 131, 217, 262, 434, 917, 1519, 1834, 3038, 4061, 6419, 8122, 12838, 28427, 56854, 198989, 397978]

約数ペア:

[(1, 397978), (2, 198989), (7, 56854), (14, 28427), (31, 12838), (49, 8122), (62, 6419), (98, 4061), (131, 3038), (217, 1834), (262, 1519), (434, 917)]